21534460

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{739}}^1$

素因数の和:826

約数の個数: 48

約数和(自身を含む): 47738880

約数和(自身を除く): 26204420

約数列:

[1, 2, 4, 5, 10, 20, 31, 47, 62, 94, 124, 155, 188, 235, 310, 470, 620, 739, 940, 1457, 1478, 2914, 2956, 3695, 5828, 7285, 7390, 14570, 14780, 22909, 29140, 34733, 45818, 69466, 91636, 114545, 138932, 173665, 229090, 347330, 458180, 694660, 1076723, 2153446, 4306892, 5383615, 10767230, 21534460]

約数ペア:

[(1, 21534460), (2, 10767230), (4, 5383615), (5, 4306892), (10, 2153446), (20, 1076723), (31, 694660), (47, 458180), (62, 347330), (94, 229090), (124, 173665), (155, 138932), (188, 114545), (235, 91636), (310, 69466), (470, 45818), (620, 34733), (739, 29140), (940, 22909), (1457, 14780), (1478, 14570), (2914, 7390), (2956, 7285), (3695, 5828)]