1661990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{521}}^1$

素因数の和:568

約数の個数: 32

約数和(自身を含む): 3382560

約数和(自身を除く): 1720570

約数列:

[1, 2, 5, 10, 11, 22, 29, 55, 58, 110, 145, 290, 319, 521, 638, 1042, 1595, 2605, 3190, 5210, 5731, 11462, 15109, 28655, 30218, 57310, 75545, 151090, 166199, 332398, 830995, 1661990]

約数ペア:

[(1, 1661990), (2, 830995), (5, 332398), (10, 166199), (11, 151090), (22, 75545), (29, 57310), (55, 30218), (58, 28655), (110, 15109), (145, 11462), (290, 5731), (319, 5210), (521, 3190), (638, 2605), (1042, 1595)]