20645950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1381}}^1$

素因数の和:1429

約数の個数: 48

約数和(自身を含む): 43184736

約数和(自身を除く): 22538786

約数列:

[1, 2, 5, 10, 13, 23, 25, 26, 46, 50, 65, 115, 130, 230, 299, 325, 575, 598, 650, 1150, 1381, 1495, 2762, 2990, 6905, 7475, 13810, 14950, 17953, 31763, 34525, 35906, 63526, 69050, 89765, 158815, 179530, 317630, 412919, 448825, 794075, 825838, 897650, 1588150, 2064595, 4129190, 10322975, 20645950]

約数ペア:

[(1, 20645950), (2, 10322975), (5, 4129190), (10, 2064595), (13, 1588150), (23, 897650), (25, 825838), (26, 794075), (46, 448825), (50, 412919), (65, 317630), (115, 179530), (130, 158815), (230, 89765), (299, 69050), (325, 63526), (575, 35906), (598, 34525), (650, 31763), (1150, 17953), (1381, 14950), (1495, 13810), (2762, 7475), (2990, 6905)]