20081640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2357}}^1$

素因数の和:2442

約数の個数: 64

約数和(自身を含む): 61119360

約数和(自身を除く): 41037720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2357, 2840, 4260, 4714, 7071, 8520, 9428, 11785, 14142, 18856, 23570, 28284, 35355, 47140, 56568, 70710, 94280, 141420, 167347, 282840, 334694, 502041, 669388, 836735, 1004082, 1338776, 1673470, 2008164, 2510205, 3346940, 4016328, 5020410, 6693880, 10040820, 20081640]

約数ペア:

[(1, 20081640), (2, 10040820), (3, 6693880), (4, 5020410), (5, 4016328), (6, 3346940), (8, 2510205), (10, 2008164), (12, 1673470), (15, 1338776), (20, 1004082), (24, 836735), (30, 669388), (40, 502041), (60, 334694), (71, 282840), (120, 167347), (142, 141420), (213, 94280), (284, 70710), (355, 56568), (426, 47140), (568, 35355), (710, 28284), (852, 23570), (1065, 18856), (1420, 14142), (1704, 11785), (2130, 9428), (2357, 8520), (2840, 7071), (4260, 4714)]