31128279

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^2\times {\mathrm{179}}^1$

素因数の和:229

約数の個数: 48

約数和(自身を含む): 52704000

約数和(自身を除く): 21575721

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 169, 179, 273, 343, 507, 537, 637, 1029, 1183, 1253, 1911, 2327, 3549, 3759, 4459, 6981, 8281, 8771, 13377, 16289, 24843, 26313, 30251, 48867, 57967, 61397, 90753, 114023, 173901, 184191, 211757, 342069, 635271, 798161, 1482299, 2394483, 4446897, 10376093, 31128279]

約数ペア:

[(1, 31128279), (3, 10376093), (7, 4446897), (13, 2394483), (21, 1482299), (39, 798161), (49, 635271), (91, 342069), (147, 211757), (169, 184191), (179, 173901), (273, 114023), (343, 90753), (507, 61397), (537, 57967), (637, 48867), (1029, 30251), (1183, 26313), (1253, 24843), (1911, 16289), (2327, 13377), (3549, 8771), (3759, 8281), (4459, 6981)]