21705450

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{11131}}^1$

素因数の和:11159

約数の個数: 48

約数和(自身を含む): 57975456

約数和(自身を除く): 36270006

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 195, 325, 390, 650, 975, 1950, 11131, 22262, 33393, 55655, 66786, 111310, 144703, 166965, 278275, 289406, 333930, 434109, 556550, 723515, 834825, 868218, 1447030, 1669650, 2170545, 3617575, 4341090, 7235150, 10852725, 21705450]

約数ペア:

[(1, 21705450), (2, 10852725), (3, 7235150), (5, 4341090), (6, 3617575), (10, 2170545), (13, 1669650), (15, 1447030), (25, 868218), (26, 834825), (30, 723515), (39, 556550), (50, 434109), (65, 333930), (75, 289406), (78, 278275), (130, 166965), (150, 144703), (195, 111310), (325, 66786), (390, 55655), (650, 33393), (975, 22262), (1950, 11131)]