21564660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27647}}^1$

素因数の和:27672

約数の個数: 48

約数和(自身を含む): 65028096

約数和(自身を除く): 43463436

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27647, 55294, 82941, 110588, 138235, 165882, 276470, 331764, 359411, 414705, 552940, 718822, 829410, 1078233, 1437644, 1658820, 1797055, 2156466, 3594110, 4312932, 5391165, 7188220, 10782330, 21564660]

約数ペア:

[(1, 21564660), (2, 10782330), (3, 7188220), (4, 5391165), (5, 4312932), (6, 3594110), (10, 2156466), (12, 1797055), (13, 1658820), (15, 1437644), (20, 1078233), (26, 829410), (30, 718822), (39, 552940), (52, 414705), (60, 359411), (65, 331764), (78, 276470), (130, 165882), (156, 138235), (195, 110588), (260, 82941), (390, 55294), (780, 27647)]