66007120

素因数分解:

$2^4\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1621}}^1$

素因数の和:2143

約数の個数: 40

約数和(自身を含む): 153862920

約数和(自身を除く): 87855800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509, 1018, 1621, 2036, 2545, 3242, 4072, 5090, 6484, 8105, 8144, 10180, 12968, 16210, 20360, 25936, 32420, 40720, 64840, 129680, 825089, 1650178, 3300356, 4125445, 6600712, 8250890, 13201424, 16501780, 33003560, 66007120]

約数ペア:

[(1, 66007120), (2, 33003560), (4, 16501780), (5, 13201424), (8, 8250890), (10, 6600712), (16, 4125445), (20, 3300356), (40, 1650178), (80, 825089), (509, 129680), (1018, 64840), (1621, 40720), (2036, 32420), (2545, 25936), (3242, 20360), (4072, 16210), (5090, 12968), (6484, 10180), (8105, 8144)]