90903440

素因数分解:

$2^4\times 5^1\times {\mathrm{569}}^1\times {\mathrm{1997}}^1$

素因数の和:2579

約数の個数: 40

約数和(自身を含む): 211827960

約数和(自身を除く): 120924520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 569, 1138, 1997, 2276, 2845, 3994, 4552, 5690, 7988, 9104, 9985, 11380, 15976, 19970, 22760, 31952, 39940, 45520, 79880, 159760, 1136293, 2272586, 4545172, 5681465, 9090344, 11362930, 18180688, 22725860, 45451720, 90903440]

約数ペア:

[(1, 90903440), (2, 45451720), (4, 22725860), (5, 18180688), (8, 11362930), (10, 9090344), (16, 5681465), (20, 4545172), (40, 2272586), (80, 1136293), (569, 159760), (1138, 79880), (1997, 45520), (2276, 39940), (2845, 31952), (3994, 22760), (4552, 19970), (5690, 15976), (7988, 11380), (9104, 9985)]