19707896

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 43001280

約数和(自身を除く): 23293384

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 71, 104, 136, 142, 157, 221, 284, 314, 442, 568, 628, 884, 923, 1207, 1256, 1768, 1846, 2041, 2414, 2669, 3692, 4082, 4828, 5338, 7384, 8164, 9656, 10676, 11147, 15691, 16328, 21352, 22294, 31382, 34697, 44588, 62764, 69394, 89176, 125528, 138788, 144911, 189499, 277576, 289822, 378998, 579644, 757996, 1159288, 1515992, 2463487, 4926974, 9853948, 19707896]

約数ペア:

[(1, 19707896), (2, 9853948), (4, 4926974), (8, 2463487), (13, 1515992), (17, 1159288), (26, 757996), (34, 579644), (52, 378998), (68, 289822), (71, 277576), (104, 189499), (136, 144911), (142, 138788), (157, 125528), (221, 89176), (284, 69394), (314, 62764), (442, 44588), (568, 34697), (628, 31382), (884, 22294), (923, 21352), (1207, 16328), (1256, 15691), (1768, 11147), (1846, 10676), (2041, 9656), (2414, 8164), (2669, 7384), (3692, 5338), (4082, 4828)]