28215525

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{673}}^1$

素因数の和:742

約数の個数: 48

約数和(自身を含む): 51482816

約数和(自身を除く): 23267291

約数列:

[1, 3, 5, 13, 15, 25, 39, 43, 65, 75, 129, 195, 215, 325, 559, 645, 673, 975, 1075, 1677, 2019, 2795, 3225, 3365, 8385, 8749, 10095, 13975, 16825, 26247, 28939, 41925, 43745, 50475, 86817, 131235, 144695, 218725, 376207, 434085, 656175, 723475, 1128621, 1881035, 2170425, 5643105, 9405175, 28215525]

約数ペア:

[(1, 28215525), (3, 9405175), (5, 5643105), (13, 2170425), (15, 1881035), (25, 1128621), (39, 723475), (43, 656175), (65, 434085), (75, 376207), (129, 218725), (195, 144695), (215, 131235), (325, 86817), (559, 50475), (645, 43745), (673, 41925), (975, 28939), (1075, 26247), (1677, 16825), (2019, 13975), (2795, 10095), (3225, 8749), (3365, 8385)]