21635960

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{4129}}^1$

素因数の和:4271

約数の個数: 32

約数和(自身を含む): 49064400

約数和(自身を除く): 27428440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 4129, 5240, 8258, 16516, 20645, 33032, 41290, 82580, 165160, 540899, 1081798, 2163596, 2704495, 4327192, 5408990, 10817980, 21635960]

約数ペア:

[(1, 21635960), (2, 10817980), (4, 5408990), (5, 4327192), (8, 2704495), (10, 2163596), (20, 1081798), (40, 540899), (131, 165160), (262, 82580), (524, 41290), (655, 33032), (1048, 20645), (1310, 16516), (2620, 8258), (4129, 5240)]