20074280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{557}}^1$

素因数の和:638

約数の個数: 64

約数和(自身を含む): 48813840

約数和(自身を除く): 28739560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 53, 68, 85, 106, 136, 170, 212, 265, 340, 424, 530, 557, 680, 901, 1060, 1114, 1802, 2120, 2228, 2785, 3604, 4456, 4505, 5570, 7208, 9010, 9469, 11140, 18020, 18938, 22280, 29521, 36040, 37876, 47345, 59042, 75752, 94690, 118084, 147605, 189380, 236168, 295210, 378760, 501857, 590420, 1003714, 1180840, 2007428, 2509285, 4014856, 5018570, 10037140, 20074280]

約数ペア:

[(1, 20074280), (2, 10037140), (4, 5018570), (5, 4014856), (8, 2509285), (10, 2007428), (17, 1180840), (20, 1003714), (34, 590420), (40, 501857), (53, 378760), (68, 295210), (85, 236168), (106, 189380), (136, 147605), (170, 118084), (212, 94690), (265, 75752), (340, 59042), (424, 47345), (530, 37876), (557, 36040), (680, 29521), (901, 22280), (1060, 18938), (1114, 18020), (1802, 11140), (2120, 9469), (2228, 9010), (2785, 7208), (3604, 5570), (4456, 4505)]