20277140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{467}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 46230912

約数和(自身を除く): 25953772

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 167, 260, 334, 467, 668, 835, 934, 1670, 1868, 2171, 2335, 3340, 4342, 4670, 6071, 8684, 9340, 10855, 12142, 21710, 24284, 30355, 43420, 60710, 77989, 121420, 155978, 311956, 389945, 779890, 1013857, 1559780, 2027714, 4055428, 5069285, 10138570, 20277140]

約数ペア:

[(1, 20277140), (2, 10138570), (4, 5069285), (5, 4055428), (10, 2027714), (13, 1559780), (20, 1013857), (26, 779890), (52, 389945), (65, 311956), (130, 155978), (167, 121420), (260, 77989), (334, 60710), (467, 43420), (668, 30355), (835, 24284), (934, 21710), (1670, 12142), (1868, 10855), (2171, 9340), (2335, 8684), (3340, 6071), (4342, 4670)]