7421309080

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{997}}^1\times {\mathrm{2621}}^1$

素因数の和:3700

約数の個数: 64

約数和(自身を含む): 16956578880

約数和(自身を除く): 9535269800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 997, 1420, 1994, 2621, 2840, 3988, 4985, 5242, 7976, 9970, 10484, 13105, 19940, 20968, 26210, 39880, 52420, 70787, 104840, 141574, 186091, 283148, 353935, 372182, 566296, 707870, 744364, 930455, 1415740, 1488728, 1860910, 2613137, 2831480, 3721820, 5226274, 7443640, 10452548, 13065685, 20905096, 26131370, 52262740, 104525480, 185532727, 371065454, 742130908, 927663635, 1484261816, 1855327270, 3710654540, 7421309080]

約数ペア:

[(1, 7421309080), (2, 3710654540), (4, 1855327270), (5, 1484261816), (8, 927663635), (10, 742130908), (20, 371065454), (40, 185532727), (71, 104525480), (142, 52262740), (284, 26131370), (355, 20905096), (568, 13065685), (710, 10452548), (997, 7443640), (1420, 5226274), (1994, 3721820), (2621, 2831480), (2840, 2613137), (3988, 1860910), (4985, 1488728), (5242, 1415740), (7976, 930455), (9970, 744364), (10484, 707870), (13105, 566296), (19940, 372182), (20968, 353935), (26210, 283148), (39880, 186091), (52420, 141574), (70787, 104840)]