20268170

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{179}}^1$

素因数の和:279

約数の個数: 48

約数和(自身を含む): 40318560

約数和(自身を除く): 20050390

約数列:

[1, 2, 5, 10, 13, 26, 65, 67, 130, 134, 169, 179, 335, 338, 358, 670, 845, 871, 895, 1690, 1742, 1790, 2327, 4355, 4654, 8710, 11323, 11635, 11993, 22646, 23270, 23986, 30251, 56615, 59965, 60502, 113230, 119930, 151255, 155909, 302510, 311818, 779545, 1559090, 2026817, 4053634, 10134085, 20268170]

約数ペア:

[(1, 20268170), (2, 10134085), (5, 4053634), (10, 2026817), (13, 1559090), (26, 779545), (65, 311818), (67, 302510), (130, 155909), (134, 151255), (169, 119930), (179, 113230), (335, 60502), (338, 59965), (358, 56615), (670, 30251), (845, 23986), (871, 23270), (895, 22646), (1690, 11993), (1742, 11635), (1790, 11323), (2327, 8710), (4355, 4654)]