20181798

素因数分解:

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

素因数の和:108

約数の個数: 120

約数和(自身を含む): 57202992

約数和(自身を除く): 37021194

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 37, 39, 42, 54, 63, 74, 78, 81, 91, 111, 117, 126, 162, 182, 189, 222, 234, 259, 273, 333, 351, 378, 481, 518, 546, 567, 666, 702, 777, 819, 962, 999, 1053, 1134, 1369, 1443, 1554, 1638, 1998, 2106, 2331, 2457, 2738, 2886, 2997, 3367, 4107, 4329, 4662, 4914, 5994, 6734, 6993, 7371, 8214, 8658, 9583, 10101, 12321, 12987, 13986, 14742, 17797, 19166, 20202, 20979, 24642, 25974, 28749, 30303, 35594, 36963, 38961, 41958, 53391, 57498, 60606, 73926, 77922, 86247, 90909, 106782, 110889, 124579, 160173, 172494, 181818, 221778, 249158, 258741, 272727, 320346, 373737, 480519, 517482, 545454, 747474, 776223, 961038, 1121211, 1441557, 1552446, 2242422, 2883114, 3363633, 6727266, 10090899, 20181798]

約数ペア:

[(1, 20181798), (2, 10090899), (3, 6727266), (6, 3363633), (7, 2883114), (9, 2242422), (13, 1552446), (14, 1441557), (18, 1121211), (21, 961038), (26, 776223), (27, 747474), (37, 545454), (39, 517482), (42, 480519), (54, 373737), (63, 320346), (74, 272727), (78, 258741), (81, 249158), (91, 221778), (111, 181818), (117, 172494), (126, 160173), (162, 124579), (182, 110889), (189, 106782), (222, 90909), (234, 86247), (259, 77922), (273, 73926), (333, 60606), (351, 57498), (378, 53391), (481, 41958), (518, 38961), (546, 36963), (567, 35594), (666, 30303), (702, 28749), (777, 25974), (819, 24642), (962, 20979), (999, 20202), (1053, 19166), (1134, 17797), (1369, 14742), (1443, 13986), (1554, 12987), (1638, 12321), (1998, 10101), (2106, 9583), (2331, 8658), (2457, 8214), (2738, 7371), (2886, 6993), (2997, 6734), (3367, 5994), (4107, 4914), (4329, 4662)]