21710390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:233

約数の個数: 64

約数和(自身を含む): 45069696

約数和(自身を除く): 23359306

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 53, 65, 106, 115, 130, 137, 230, 265, 274, 299, 530, 598, 685, 689, 1219, 1370, 1378, 1495, 1781, 2438, 2990, 3151, 3445, 3562, 6095, 6302, 6890, 7261, 8905, 12190, 14522, 15755, 15847, 17810, 31510, 31694, 36305, 40963, 72610, 79235, 81926, 94393, 158470, 167003, 188786, 204815, 334006, 409630, 471965, 835015, 943930, 1670030, 2171039, 4342078, 10855195, 21710390]

約数ペア:

[(1, 21710390), (2, 10855195), (5, 4342078), (10, 2171039), (13, 1670030), (23, 943930), (26, 835015), (46, 471965), (53, 409630), (65, 334006), (106, 204815), (115, 188786), (130, 167003), (137, 158470), (230, 94393), (265, 81926), (274, 79235), (299, 72610), (530, 40963), (598, 36305), (685, 31694), (689, 31510), (1219, 17810), (1370, 15847), (1378, 15755), (1495, 14522), (1781, 12190), (2438, 8905), (2990, 7261), (3151, 6890), (3445, 6302), (3562, 6095)]