20569040

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{6949}}^1$

素因数の和:6999

約数の個数: 40

約数和(自身を含む): 49122600

約数和(自身を除く): 28553560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 6949, 13898, 27796, 34745, 55592, 69490, 111184, 138980, 257113, 277960, 514226, 555920, 1028452, 1285565, 2056904, 2571130, 4113808, 5142260, 10284520, 20569040]

約数ペア:

[(1, 20569040), (2, 10284520), (4, 5142260), (5, 4113808), (8, 2571130), (10, 2056904), (16, 1285565), (20, 1028452), (37, 555920), (40, 514226), (74, 277960), (80, 257113), (148, 138980), (185, 111184), (296, 69490), (370, 55592), (592, 34745), (740, 27796), (1480, 13898), (2960, 6949)]