21684474

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1523}}^1$

素因数の和:1651

約数の個数: 48

約数和(自身を含む): 54205632

約数和(自身を除く): 32521158

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 113, 126, 226, 339, 678, 791, 1017, 1523, 1582, 2034, 2373, 3046, 4569, 4746, 7119, 9138, 10661, 13707, 14238, 21322, 27414, 31983, 63966, 95949, 172099, 191898, 344198, 516297, 1032594, 1204693, 1548891, 2409386, 3097782, 3614079, 7228158, 10842237, 21684474]

約数ペア:

[(1, 21684474), (2, 10842237), (3, 7228158), (6, 3614079), (7, 3097782), (9, 2409386), (14, 1548891), (18, 1204693), (21, 1032594), (42, 516297), (63, 344198), (113, 191898), (126, 172099), (226, 95949), (339, 63966), (678, 31983), (791, 27414), (1017, 21322), (1523, 14238), (1582, 13707), (2034, 10661), (2373, 9138), (3046, 7119), (4569, 4746)]