20704986

素因数分解:

$2^1\times 3^2\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:351

約数の個数: 48

約数和(自身を含む): 46280520

約数和(自身を除く): 25575534

約数列:

[1, 2, 3, 6, 9, 18, 61, 109, 122, 173, 183, 218, 327, 346, 366, 519, 549, 654, 981, 1038, 1098, 1557, 1962, 3114, 6649, 10553, 13298, 18857, 19947, 21106, 31659, 37714, 39894, 56571, 59841, 63318, 94977, 113142, 119682, 169713, 189954, 339426, 1150277, 2300554, 3450831, 6901662, 10352493, 20704986]

約数ペア:

[(1, 20704986), (2, 10352493), (3, 6901662), (6, 3450831), (9, 2300554), (18, 1150277), (61, 339426), (109, 189954), (122, 169713), (173, 119682), (183, 113142), (218, 94977), (327, 63318), (346, 59841), (366, 56571), (519, 39894), (549, 37714), (654, 31659), (981, 21106), (1038, 19947), (1098, 18857), (1557, 13298), (1962, 10553), (3114, 6649)]