21272706

素因数分解:

$2^1\times 3^5\times 7^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1$

素因数の和:87

約数の個数: 144

約数和(自身を含む): 60750144

約数和(自身を除く): 39477438

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, 169, 182, 189, 222, 234, 243, 259, 273, 333, 338, 351, 378, 481, 486, 507, 518, 546, 567, 666, 702, 777, 819, 962, 999, 1014, 1053, 1134, 1183, 1443, 1521, 1554, 1638, 1701, 1998, 2106, 2331, 2366, 2457, 2886, 2997, 3042, 3159, 3367, 3402, 3549, 4329, 4563, 4662, 4914, 5994, 6253, 6318, 6734, 6993, 7098, 7371, 8658, 8991, 9126, 10101, 10647, 12506, 12987, 13689, 13986, 14742, 17982, 18759, 20202, 20979, 21294, 22113, 25974, 27378, 30303, 31941, 37518, 38961, 41067, 41958, 43771, 44226, 56277, 60606, 62937, 63882, 77922, 82134, 87542, 90909, 95823, 112554, 116883, 125874, 131313, 168831, 181818, 191646, 233766, 262626, 272727, 287469, 337662, 393939, 506493, 545454, 574938, 787878, 818181, 1012986, 1181817, 1519479, 1636362, 2363634, 3038958, 3545451, 7090902, 10636353, 21272706]

約数ペア:

[(1, 21272706), (2, 10636353), (3, 7090902), (6, 3545451), (7, 3038958), (9, 2363634), (13, 1636362), (14, 1519479), (18, 1181817), (21, 1012986), (26, 818181), (27, 787878), (37, 574938), (39, 545454), (42, 506493), (54, 393939), (63, 337662), (74, 287469), (78, 272727), (81, 262626), (91, 233766), (111, 191646), (117, 181818), (126, 168831), (162, 131313), (169, 125874), (182, 116883), (189, 112554), (222, 95823), (234, 90909), (243, 87542), (259, 82134), (273, 77922), (333, 63882), (338, 62937), (351, 60606), (378, 56277), (481, 44226), (486, 43771), (507, 41958), (518, 41067), (546, 38961), (567, 37518), (666, 31941), (702, 30303), (777, 27378), (819, 25974), (962, 22113), (999, 21294), (1014, 20979), (1053, 20202), (1134, 18759), (1183, 17982), (1443, 14742), (1521, 13986), (1554, 13689), (1638, 12987), (1701, 12506), (1998, 10647), (2106, 10101), (2331, 9126), (2366, 8991), (2457, 8658), (2886, 7371), (2997, 7098), (3042, 6993), (3159, 6734), (3367, 6318), (3402, 6253), (3549, 5994), (4329, 4914), (4563, 4662)]