721426419

素因数分解:

$3^6\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1297}}^1$

素因数の和:1431

約数の個数: 56

約数和(自身を含む): 1248468320

約数和(自身を除く): 527041901

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 109, 189, 243, 327, 567, 729, 763, 981, 1297, 1701, 2289, 2943, 3891, 5103, 6867, 8829, 9079, 11673, 20601, 26487, 27237, 35019, 61803, 79461, 81711, 105057, 141373, 185409, 245133, 315171, 424119, 556227, 735399, 945513, 989611, 1272357, 2206197, 2968833, 3817071, 6618591, 8906499, 11451213, 26719497, 34353639, 80158491, 103060917, 240475473, 721426419]

約数ペア:

[(1, 721426419), (3, 240475473), (7, 103060917), (9, 80158491), (21, 34353639), (27, 26719497), (63, 11451213), (81, 8906499), (109, 6618591), (189, 3817071), (243, 2968833), (327, 2206197), (567, 1272357), (729, 989611), (763, 945513), (981, 735399), (1297, 556227), (1701, 424119), (2289, 315171), (2943, 245133), (3891, 185409), (5103, 141373), (6867, 105057), (8829, 81711), (9079, 79461), (11673, 61803), (20601, 35019), (26487, 27237)]