20388810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2273}}^1$

素因数の和:2319

約数の個数: 64

約数和(自身を含む): 55012608

約数和(自身を除く): 34623798

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 23, 26, 30, 39, 46, 65, 69, 78, 115, 130, 138, 195, 230, 299, 345, 390, 598, 690, 897, 1495, 1794, 2273, 2990, 4485, 4546, 6819, 8970, 11365, 13638, 22730, 29549, 34095, 52279, 59098, 68190, 88647, 104558, 147745, 156837, 177294, 261395, 295490, 313674, 443235, 522790, 679627, 784185, 886470, 1359254, 1568370, 2038881, 3398135, 4077762, 6796270, 10194405, 20388810]

約数ペア:

[(1, 20388810), (2, 10194405), (3, 6796270), (5, 4077762), (6, 3398135), (10, 2038881), (13, 1568370), (15, 1359254), (23, 886470), (26, 784185), (30, 679627), (39, 522790), (46, 443235), (65, 313674), (69, 295490), (78, 261395), (115, 177294), (130, 156837), (138, 147745), (195, 104558), (230, 88647), (299, 68190), (345, 59098), (390, 52279), (598, 34095), (690, 29549), (897, 22730), (1495, 13638), (1794, 11365), (2273, 8970), (2990, 6819), (4485, 4546)]