20511954

素因数分解:

$2^1\times 3^4\times {\mathrm{53}}^1\times {\mathrm{2389}}^1$

素因数の和:2456

約数の個数: 40

約数和(自身を含む): 46848780

約数和(自身を除く): 26336826

約数列:

[1, 2, 3, 6, 9, 18, 27, 53, 54, 81, 106, 159, 162, 318, 477, 954, 1431, 2389, 2862, 4293, 4778, 7167, 8586, 14334, 21501, 43002, 64503, 126617, 129006, 193509, 253234, 379851, 387018, 759702, 1139553, 2279106, 3418659, 6837318, 10255977, 20511954]

約数ペア:

[(1, 20511954), (2, 10255977), (3, 6837318), (6, 3418659), (9, 2279106), (18, 1139553), (27, 759702), (53, 387018), (54, 379851), (81, 253234), (106, 193509), (159, 129006), (162, 126617), (318, 64503), (477, 43002), (954, 21501), (1431, 14334), (2389, 8586), (2862, 7167), (4293, 4778)]