20624950

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:289

約数の個数: 48

約数和(自身を含む): 40216176

約数和(自身を除く): 19591226

約数列:

[1, 2, 5, 10, 25, 43, 50, 53, 86, 106, 181, 215, 265, 362, 430, 530, 905, 1075, 1325, 1810, 2150, 2279, 2650, 4525, 4558, 7783, 9050, 9593, 11395, 15566, 19186, 22790, 38915, 47965, 56975, 77830, 95930, 113950, 194575, 239825, 389150, 412499, 479650, 824998, 2062495, 4124990, 10312475, 20624950]

約数ペア:

[(1, 20624950), (2, 10312475), (5, 4124990), (10, 2062495), (25, 824998), (43, 479650), (50, 412499), (53, 389150), (86, 239825), (106, 194575), (181, 113950), (215, 95930), (265, 77830), (362, 56975), (430, 47965), (530, 38915), (905, 22790), (1075, 19186), (1325, 15566), (1810, 11395), (2150, 9593), (2279, 9050), (2650, 7783), (4525, 4558)]