18763325

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^2\times {\mathrm{53}}^1$

素因数の和:111

約数の個数: 54

約数和(自身を含む): 29293326

約数和(自身を除く): 10530001

約数列:

[1, 5, 7, 17, 25, 35, 49, 53, 85, 119, 175, 245, 265, 289, 371, 425, 595, 833, 901, 1225, 1325, 1445, 1855, 2023, 2597, 2975, 4165, 4505, 6307, 7225, 9275, 10115, 12985, 14161, 15317, 20825, 22525, 31535, 44149, 50575, 64925, 70805, 76585, 107219, 157675, 220745, 354025, 382925, 536095, 750533, 1103725, 2680475, 3752665, 18763325]

約数ペア:

[(1, 18763325), (5, 3752665), (7, 2680475), (17, 1103725), (25, 750533), (35, 536095), (49, 382925), (53, 354025), (85, 220745), (119, 157675), (175, 107219), (245, 76585), (265, 70805), (289, 64925), (371, 50575), (425, 44149), (595, 31535), (833, 22525), (901, 20825), (1225, 15317), (1325, 14161), (1445, 12985), (1855, 10115), (2023, 9275), (2597, 7225), (2975, 6307), (4165, 4505)]