21277998

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{181}}^1\times {\mathrm{311}}^1$

素因数の和:510

約数の個数: 64

約数和(自身を含む): 54512640

約数和(自身を除く): 33234642

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 181, 189, 311, 362, 378, 543, 622, 933, 1086, 1267, 1629, 1866, 2177, 2534, 2799, 3258, 3801, 4354, 4887, 5598, 6531, 7602, 8397, 9774, 11403, 13062, 16794, 19593, 22806, 34209, 39186, 56291, 58779, 68418, 112582, 117558, 168873, 337746, 394037, 506619, 788074, 1013238, 1182111, 1519857, 2364222, 3039714, 3546333, 7092666, 10638999, 21277998]

約数ペア:

[(1, 21277998), (2, 10638999), (3, 7092666), (6, 3546333), (7, 3039714), (9, 2364222), (14, 1519857), (18, 1182111), (21, 1013238), (27, 788074), (42, 506619), (54, 394037), (63, 337746), (126, 168873), (181, 117558), (189, 112582), (311, 68418), (362, 58779), (378, 56291), (543, 39186), (622, 34209), (933, 22806), (1086, 19593), (1267, 16794), (1629, 13062), (1866, 11403), (2177, 9774), (2534, 8397), (2799, 7602), (3258, 6531), (3801, 5598), (4354, 4887)]