21856010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{461}}^1$

素因数の和:910

約数の個数: 32

約数和(自身を含む): 43110144

約数和(自身を除く): 21254134

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 431, 461, 862, 922, 2155, 2305, 4310, 4610, 4741, 5071, 9482, 10142, 23705, 25355, 47410, 50710, 198691, 397382, 993455, 1986910, 2185601, 4371202, 10928005, 21856010]

約数ペア:

[(1, 21856010), (2, 10928005), (5, 4371202), (10, 2185601), (11, 1986910), (22, 993455), (55, 397382), (110, 198691), (431, 50710), (461, 47410), (862, 25355), (922, 23705), (2155, 10142), (2305, 9482), (4310, 5071), (4610, 4741)]