21335500

素因数分解:

$2^2\times 5^3\times {\mathrm{71}}^1\times {\mathrm{601}}^1$

素因数の和:691

約数の個数: 48

約数和(自身を含む): 47331648

約数和(自身を除く): 25996148

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 125, 142, 250, 284, 355, 500, 601, 710, 1202, 1420, 1775, 2404, 3005, 3550, 6010, 7100, 8875, 12020, 15025, 17750, 30050, 35500, 42671, 60100, 75125, 85342, 150250, 170684, 213355, 300500, 426710, 853420, 1066775, 2133550, 4267100, 5333875, 10667750, 21335500]

約数ペア:

[(1, 21335500), (2, 10667750), (4, 5333875), (5, 4267100), (10, 2133550), (20, 1066775), (25, 853420), (50, 426710), (71, 300500), (100, 213355), (125, 170684), (142, 150250), (250, 85342), (284, 75125), (355, 60100), (500, 42671), (601, 35500), (710, 30050), (1202, 17750), (1420, 15025), (1775, 12020), (2404, 8875), (3005, 7100), (3550, 6010)]