18909072

素因数分解:

$2^4\times 3^3\times 7^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1$

素因数の和:87

約数の個数: 240

約数和(自身を含む): 68983680

約数和(自身を除く): 50074608

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 27, 28, 36, 37, 39, 42, 48, 52, 54, 56, 63, 72, 74, 78, 84, 91, 104, 108, 111, 112, 117, 126, 144, 148, 156, 168, 169, 182, 189, 208, 216, 222, 234, 252, 259, 273, 296, 312, 333, 336, 338, 351, 364, 378, 432, 444, 468, 481, 504, 507, 518, 546, 592, 624, 666, 676, 702, 728, 756, 777, 819, 888, 936, 962, 999, 1008, 1014, 1036, 1092, 1183, 1332, 1352, 1404, 1443, 1456, 1512, 1521, 1554, 1638, 1776, 1872, 1924, 1998, 2028, 2072, 2184, 2331, 2366, 2457, 2664, 2704, 2808, 2886, 3024, 3042, 3108, 3276, 3367, 3549, 3848, 3996, 4056, 4144, 4329, 4368, 4563, 4662, 4732, 4914, 5328, 5616, 5772, 6084, 6216, 6253, 6552, 6734, 6993, 7098, 7696, 7992, 8112, 8658, 9126, 9324, 9464, 9828, 10101, 10647, 11544, 12168, 12432, 12506, 12987, 13104, 13468, 13986, 14196, 15984, 17316, 18252, 18648, 18759, 18928, 19656, 20202, 21294, 23088, 24336, 25012, 25974, 26936, 27972, 28392, 30303, 31941, 34632, 36504, 37296, 37518, 39312, 40404, 42588, 43771, 50024, 51948, 53872, 55944, 56277, 56784, 60606, 63882, 69264, 73008, 75036, 80808, 85176, 87542, 90909, 100048, 103896, 111888, 112554, 121212, 127764, 131313, 150072, 161616, 168831, 170352, 175084, 181818, 207792, 225108, 242424, 255528, 262626, 300144, 337662, 350168, 363636, 393939, 450216, 484848, 511056, 525252, 675324, 700336, 727272, 787878, 900432, 1050504, 1181817, 1350648, 1454544, 1575756, 2101008, 2363634, 2701296, 3151512, 4727268, 6303024, 9454536, 18909072]

約数ペア:

[(1, 18909072), (2, 9454536), (3, 6303024), (4, 4727268), (6, 3151512), (7, 2701296), (8, 2363634), (9, 2101008), (12, 1575756), (13, 1454544), (14, 1350648), (16, 1181817), (18, 1050504), (21, 900432), (24, 787878), (26, 727272), (27, 700336), (28, 675324), (36, 525252), (37, 511056), (39, 484848), (42, 450216), (48, 393939), (52, 363636), (54, 350168), (56, 337662), (63, 300144), (72, 262626), (74, 255528), (78, 242424), (84, 225108), (91, 207792), (104, 181818), (108, 175084), (111, 170352), (112, 168831), (117, 161616), (126, 150072), (144, 131313), (148, 127764), (156, 121212), (168, 112554), (169, 111888), (182, 103896), (189, 100048), (208, 90909), (216, 87542), (222, 85176), (234, 80808), (252, 75036), (259, 73008), (273, 69264), (296, 63882), (312, 60606), (333, 56784), (336, 56277), (338, 55944), (351, 53872), (364, 51948), (378, 50024), (432, 43771), (444, 42588), (468, 40404), (481, 39312), (504, 37518), (507, 37296), (518, 36504), (546, 34632), (592, 31941), (624, 30303), (666, 28392), (676, 27972), (702, 26936), (728, 25974), (756, 25012), (777, 24336), (819, 23088), (888, 21294), (936, 20202), (962, 19656), (999, 18928), (1008, 18759), (1014, 18648), (1036, 18252), (1092, 17316), (1183, 15984), (1332, 14196), (1352, 13986), (1404, 13468), (1443, 13104), (1456, 12987), (1512, 12506), (1521, 12432), (1554, 12168), (1638, 11544), (1776, 10647), (1872, 10101), (1924, 9828), (1998, 9464), (2028, 9324), (2072, 9126), (2184, 8658), (2331, 8112), (2366, 7992), (2457, 7696), (2664, 7098), (2704, 6993), (2808, 6734), (2886, 6552), (3024, 6253), (3042, 6216), (3108, 6084), (3276, 5772), (3367, 5616), (3549, 5328), (3848, 4914), (3996, 4732), (4056, 4662), (4144, 4563), (4329, 4368)]