90111640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{36931}}^1$

素因数の和:37003

約数の個数: 32

約数和(自身を含む): 206080560

約数和(自身を除く): 115968920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 36931, 73862, 147724, 184655, 295448, 369310, 738620, 1477240, 2252791, 4505582, 9011164, 11263955, 18022328, 22527910, 45055820, 90111640]

約数ペア:

[(1, 90111640), (2, 45055820), (4, 22527910), (5, 18022328), (8, 11263955), (10, 9011164), (20, 4505582), (40, 2252791), (61, 1477240), (122, 738620), (244, 369310), (305, 295448), (488, 184655), (610, 147724), (1220, 73862), (2440, 36931)]