3647980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{367}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 8902656

約数和(自身を除く): 5254676

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 367, 497, 710, 734, 994, 1420, 1468, 1835, 1988, 2485, 2569, 3670, 4970, 5138, 7340, 9940, 10276, 12845, 25690, 26057, 51380, 52114, 104228, 130285, 182399, 260570, 364798, 521140, 729596, 911995, 1823990, 3647980]

約数ペア:

[(1, 3647980), (2, 1823990), (4, 911995), (5, 729596), (7, 521140), (10, 364798), (14, 260570), (20, 182399), (28, 130285), (35, 104228), (70, 52114), (71, 51380), (140, 26057), (142, 25690), (284, 12845), (355, 10276), (367, 9940), (497, 7340), (710, 5138), (734, 4970), (994, 3670), (1420, 2569), (1468, 2485), (1835, 1988)]