20539688

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{4817}}^1$

素因数の和:4877

約数の個数: 32

約数和(自身を含む): 42494760

約数和(自身を除く): 21955072

約数列:

[1, 2, 4, 8, 13, 26, 41, 52, 82, 104, 164, 328, 533, 1066, 2132, 4264, 4817, 9634, 19268, 38536, 62621, 125242, 197497, 250484, 394994, 500968, 789988, 1579976, 2567461, 5134922, 10269844, 20539688]

約数ペア:

[(1, 20539688), (2, 10269844), (4, 5134922), (8, 2567461), (13, 1579976), (26, 789988), (41, 500968), (52, 394994), (82, 250484), (104, 197497), (164, 125242), (328, 62621), (533, 38536), (1066, 19268), (2132, 9634), (4264, 4817)]