687180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{881}}^1$

素因数の和:906

約数の個数: 48

約数和(自身を含む): 2074464

約数和(自身を除く): 1387284

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 881, 1762, 2643, 3524, 4405, 5286, 8810, 10572, 11453, 13215, 17620, 22906, 26430, 34359, 45812, 52860, 57265, 68718, 114530, 137436, 171795, 229060, 343590, 687180]

約数ペア:

[(1, 687180), (2, 343590), (3, 229060), (4, 171795), (5, 137436), (6, 114530), (10, 68718), (12, 57265), (13, 52860), (15, 45812), (20, 34359), (26, 26430), (30, 22906), (39, 17620), (52, 13215), (60, 11453), (65, 10572), (78, 8810), (130, 5286), (156, 4405), (195, 3524), (260, 2643), (390, 1762), (780, 881)]