21210080

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6977}}^1$

素因数の和:7011

約数の個数: 48

約数和(自身を含む): 52753680

約数和(自身を除く): 31543600

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 6977, 13954, 27908, 34885, 55816, 69770, 111632, 132563, 139540, 223264, 265126, 279080, 530252, 558160, 662815, 1060504, 1116320, 1325630, 2121008, 2651260, 4242016, 5302520, 10605040, 21210080]

約数ペア:

[(1, 21210080), (2, 10605040), (4, 5302520), (5, 4242016), (8, 2651260), (10, 2121008), (16, 1325630), (19, 1116320), (20, 1060504), (32, 662815), (38, 558160), (40, 530252), (76, 279080), (80, 265126), (95, 223264), (152, 139540), (160, 132563), (190, 111632), (304, 69770), (380, 55816), (608, 34885), (760, 27908), (1520, 13954), (3040, 6977)]