20866428

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:152

約数の個数: 144

約数和(自身を含む): 62899200

約数和(自身を除く): 42032772

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 23, 29, 33, 36, 44, 46, 58, 66, 69, 79, 87, 92, 99, 116, 132, 138, 158, 174, 198, 207, 237, 253, 261, 276, 316, 319, 348, 396, 414, 474, 506, 522, 638, 667, 711, 759, 828, 869, 948, 957, 1012, 1044, 1276, 1334, 1422, 1518, 1738, 1817, 1914, 2001, 2277, 2291, 2607, 2668, 2844, 2871, 3036, 3476, 3634, 3828, 4002, 4554, 4582, 5214, 5451, 5742, 6003, 6873, 7268, 7337, 7821, 8004, 9108, 9164, 10428, 10902, 11484, 12006, 13746, 14674, 15642, 16353, 19987, 20619, 21804, 22011, 24012, 25201, 27492, 29348, 31284, 32706, 39974, 41238, 44022, 50402, 52693, 59961, 65412, 66033, 75603, 79948, 82476, 88044, 100804, 105386, 119922, 132066, 151206, 158079, 179883, 210772, 226809, 239844, 264132, 302412, 316158, 359766, 453618, 474237, 579623, 632316, 719532, 907236, 948474, 1159246, 1738869, 1896948, 2318492, 3477738, 5216607, 6955476, 10433214, 20866428]

約数ペア:

[(1, 20866428), (2, 10433214), (3, 6955476), (4, 5216607), (6, 3477738), (9, 2318492), (11, 1896948), (12, 1738869), (18, 1159246), (22, 948474), (23, 907236), (29, 719532), (33, 632316), (36, 579623), (44, 474237), (46, 453618), (58, 359766), (66, 316158), (69, 302412), (79, 264132), (87, 239844), (92, 226809), (99, 210772), (116, 179883), (132, 158079), (138, 151206), (158, 132066), (174, 119922), (198, 105386), (207, 100804), (237, 88044), (253, 82476), (261, 79948), (276, 75603), (316, 66033), (319, 65412), (348, 59961), (396, 52693), (414, 50402), (474, 44022), (506, 41238), (522, 39974), (638, 32706), (667, 31284), (711, 29348), (759, 27492), (828, 25201), (869, 24012), (948, 22011), (957, 21804), (1012, 20619), (1044, 19987), (1276, 16353), (1334, 15642), (1422, 14674), (1518, 13746), (1738, 12006), (1817, 11484), (1914, 10902), (2001, 10428), (2277, 9164), (2291, 9108), (2607, 8004), (2668, 7821), (2844, 7337), (2871, 7268), (3036, 6873), (3476, 6003), (3634, 5742), (3828, 5451), (4002, 5214), (4554, 4582)]