728168217

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{587}}^1\times {\mathrm{3109}}^1$

素因数の和:3725

約数の個数: 32

約数和(自身を含む): 1170355200

約数和(自身を除く): 442186983

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 587, 1761, 3109, 4109, 9327, 11153, 12327, 21763, 33459, 59071, 65289, 78071, 177213, 234213, 413497, 1240491, 1824983, 5474949, 12774881, 34674677, 38324643, 104024031, 242722739, 728168217]

約数ペア:

[(1, 728168217), (3, 242722739), (7, 104024031), (19, 38324643), (21, 34674677), (57, 12774881), (133, 5474949), (399, 1824983), (587, 1240491), (1761, 413497), (3109, 234213), (4109, 177213), (9327, 78071), (11153, 65289), (12327, 59071), (21763, 33459)]