21194080

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4273}}^1$

素因数の和:4319

約数の個数: 48

約数和(自身を含む): 51698304

約数和(自身を除く): 30504224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4273, 4960, 8546, 17092, 21365, 34184, 42730, 68368, 85460, 132463, 136736, 170920, 264926, 341840, 529852, 662315, 683680, 1059704, 1324630, 2119408, 2649260, 4238816, 5298520, 10597040, 21194080]

約数ペア:

[(1, 21194080), (2, 10597040), (4, 5298520), (5, 4238816), (8, 2649260), (10, 2119408), (16, 1324630), (20, 1059704), (31, 683680), (32, 662315), (40, 529852), (62, 341840), (80, 264926), (124, 170920), (155, 136736), (160, 132463), (248, 85460), (310, 68368), (496, 42730), (620, 34184), (992, 21365), (1240, 17092), (2480, 8546), (4273, 4960)]