247487920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{162821}}^1$

素因数の和:162853

約数の個数: 40

約数和(自身を含む): 605697840

約数和(自身を除く): 358209920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 162821, 325642, 651284, 814105, 1302568, 1628210, 2605136, 3093599, 3256420, 6187198, 6512840, 12374396, 13025680, 15467995, 24748792, 30935990, 49497584, 61871980, 123743960, 247487920]

約数ペア:

[(1, 247487920), (2, 123743960), (4, 61871980), (5, 49497584), (8, 30935990), (10, 24748792), (16, 15467995), (19, 13025680), (20, 12374396), (38, 6512840), (40, 6187198), (76, 3256420), (80, 3093599), (95, 2605136), (152, 1628210), (190, 1302568), (304, 814105), (380, 651284), (760, 325642), (1520, 162821)]