21015840

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{43783}}^1$

素因数の和:43801

約数の個数: 48

約数和(自身を含む): 66201408

約数和(自身を除く): 45185568

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480, 43783, 87566, 131349, 175132, 218915, 262698, 350264, 437830, 525396, 656745, 700528, 875660, 1050792, 1313490, 1401056, 1751320, 2101584, 2626980, 3502640, 4203168, 5253960, 7005280, 10507920, 21015840]

約数ペア:

[(1, 21015840), (2, 10507920), (3, 7005280), (4, 5253960), (5, 4203168), (6, 3502640), (8, 2626980), (10, 2101584), (12, 1751320), (15, 1401056), (16, 1313490), (20, 1050792), (24, 875660), (30, 700528), (32, 656745), (40, 525396), (48, 437830), (60, 350264), (80, 262698), (96, 218915), (120, 175132), (160, 131349), (240, 87566), (480, 43783)]