9091990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:388

約数の個数: 32

約数和(自身を含む): 17095680

約数和(自身を除く): 8003690

約数列:

[1, 2, 5, 10, 31, 62, 139, 155, 211, 278, 310, 422, 695, 1055, 1390, 2110, 4309, 6541, 8618, 13082, 21545, 29329, 32705, 43090, 58658, 65410, 146645, 293290, 909199, 1818398, 4545995, 9091990]

約数ペア:

[(1, 9091990), (2, 4545995), (5, 1818398), (10, 909199), (31, 293290), (62, 146645), (139, 65410), (155, 58658), (211, 43090), (278, 32705), (310, 29329), (422, 21545), (695, 13082), (1055, 8618), (1390, 6541), (2110, 4309)]