406578020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1\times {\mathrm{1879}}^1$

素因数の和:2268

約数の個数: 48

約数和(自身を含む): 884352000

約数和(自身を除く): 477773980

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 349, 620, 698, 1396, 1745, 1879, 3490, 3758, 6980, 7516, 9395, 10819, 18790, 21638, 37580, 43276, 54095, 58249, 108190, 116498, 216380, 232996, 291245, 582490, 655771, 1164980, 1311542, 2623084, 3278855, 6557710, 13115420, 20328901, 40657802, 81315604, 101644505, 203289010, 406578020]

約数ペア:

[(1, 406578020), (2, 203289010), (4, 101644505), (5, 81315604), (10, 40657802), (20, 20328901), (31, 13115420), (62, 6557710), (124, 3278855), (155, 2623084), (310, 1311542), (349, 1164980), (620, 655771), (698, 582490), (1396, 291245), (1745, 232996), (1879, 216380), (3490, 116498), (3758, 108190), (6980, 58249), (7516, 54095), (9395, 43276), (10819, 37580), (18790, 21638)]