8180620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{823}}^1$

素因数の和:910

約数の個数: 48

約数和(自身を含む): 19934208

約数和(自身を除く): 11753588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 823, 994, 1420, 1646, 1988, 2485, 3292, 4115, 4970, 5761, 8230, 9940, 11522, 16460, 23044, 28805, 57610, 58433, 115220, 116866, 233732, 292165, 409031, 584330, 818062, 1168660, 1636124, 2045155, 4090310, 8180620]

約数ペア:

[(1, 8180620), (2, 4090310), (4, 2045155), (5, 1636124), (7, 1168660), (10, 818062), (14, 584330), (20, 409031), (28, 292165), (35, 233732), (70, 116866), (71, 115220), (140, 58433), (142, 57610), (284, 28805), (355, 23044), (497, 16460), (710, 11522), (823, 9940), (994, 8230), (1420, 5761), (1646, 4970), (1988, 4115), (2485, 3292)]