21731450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{499}}^1$

素因数の和:591

約数の個数: 48

約数和(自身を含む): 44268000

約数和(自身を除く): 22536550

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 67, 130, 134, 325, 335, 499, 650, 670, 871, 998, 1675, 1742, 2495, 3350, 4355, 4990, 6487, 8710, 12475, 12974, 21775, 24950, 32435, 33433, 43550, 64870, 66866, 162175, 167165, 324350, 334330, 434629, 835825, 869258, 1671650, 2173145, 4346290, 10865725, 21731450]

約数ペア:

[(1, 21731450), (2, 10865725), (5, 4346290), (10, 2173145), (13, 1671650), (25, 869258), (26, 835825), (50, 434629), (65, 334330), (67, 324350), (130, 167165), (134, 162175), (325, 66866), (335, 64870), (499, 43550), (650, 33433), (670, 32435), (871, 24950), (998, 21775), (1675, 12974), (1742, 12475), (2495, 8710), (3350, 6487), (4355, 4990)]