19917664

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{127}}^1$

素因数の和:192

約数の個数: 72

約数和(自身を含む): 44271360

約数和(自身を除く): 24353696

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 32, 52, 58, 104, 116, 127, 169, 208, 232, 254, 338, 377, 416, 464, 508, 676, 754, 928, 1016, 1352, 1508, 1651, 2032, 2704, 3016, 3302, 3683, 4064, 4901, 5408, 6032, 6604, 7366, 9802, 12064, 13208, 14732, 19604, 21463, 26416, 29464, 39208, 42926, 47879, 52832, 58928, 78416, 85852, 95758, 117856, 156832, 171704, 191516, 343408, 383032, 622427, 686816, 766064, 1244854, 1532128, 2489708, 4979416, 9958832, 19917664]

約数ペア:

[(1, 19917664), (2, 9958832), (4, 4979416), (8, 2489708), (13, 1532128), (16, 1244854), (26, 766064), (29, 686816), (32, 622427), (52, 383032), (58, 343408), (104, 191516), (116, 171704), (127, 156832), (169, 117856), (208, 95758), (232, 85852), (254, 78416), (338, 58928), (377, 52832), (416, 47879), (464, 42926), (508, 39208), (676, 29464), (754, 26416), (928, 21463), (1016, 19604), (1352, 14732), (1508, 13208), (1651, 12064), (2032, 9802), (2704, 7366), (3016, 6604), (3302, 6032), (3683, 5408), (4064, 4901)]