40664540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4091}}^1$

素因数の和:4178

約数の個数: 48

約数和(自身を含む): 98993664

約数和(自身を除く): 58329124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4091, 4970, 8182, 9940, 16364, 20455, 28637, 40910, 57274, 81820, 114548, 143185, 286370, 290461, 572740, 580922, 1161844, 1452305, 2033227, 2904610, 4066454, 5809220, 8132908, 10166135, 20332270, 40664540]

約数ペア:

[(1, 40664540), (2, 20332270), (4, 10166135), (5, 8132908), (7, 5809220), (10, 4066454), (14, 2904610), (20, 2033227), (28, 1452305), (35, 1161844), (70, 580922), (71, 572740), (140, 290461), (142, 286370), (284, 143185), (355, 114548), (497, 81820), (710, 57274), (994, 40910), (1420, 28637), (1988, 20455), (2485, 16364), (4091, 9940), (4970, 8182)]