20703520

素因数分解:

$2^5\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1559}}^1$

素因数の和:1657

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 28829600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 83, 160, 166, 332, 415, 664, 830, 1328, 1559, 1660, 2656, 3118, 3320, 6236, 6640, 7795, 12472, 13280, 15590, 24944, 31180, 49888, 62360, 124720, 129397, 249440, 258794, 517588, 646985, 1035176, 1293970, 2070352, 2587940, 4140704, 5175880, 10351760, 20703520]

約数ペア:

[(1, 20703520), (2, 10351760), (4, 5175880), (5, 4140704), (8, 2587940), (10, 2070352), (16, 1293970), (20, 1035176), (32, 646985), (40, 517588), (80, 258794), (83, 249440), (160, 129397), (166, 124720), (332, 62360), (415, 49888), (664, 31180), (830, 24944), (1328, 15590), (1559, 13280), (1660, 12472), (2656, 7795), (3118, 6640), (3320, 6236)]