19650813

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^2\times {\mathrm{113}}^1$

素因数の和:163

約数の個数: 48

約数和(自身を含む): 33379200

約数和(自身を除く): 13728387

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 113, 147, 169, 273, 339, 343, 507, 637, 791, 1029, 1183, 1469, 1911, 2373, 3549, 4407, 4459, 5537, 8281, 10283, 13377, 16611, 19097, 24843, 30849, 38759, 57291, 57967, 71981, 116277, 133679, 173901, 215943, 401037, 503867, 935753, 1511601, 2807259, 6550271, 19650813]

約数ペア:

[(1, 19650813), (3, 6550271), (7, 2807259), (13, 1511601), (21, 935753), (39, 503867), (49, 401037), (91, 215943), (113, 173901), (147, 133679), (169, 116277), (273, 71981), (339, 57967), (343, 57291), (507, 38759), (637, 30849), (791, 24843), (1029, 19097), (1183, 16611), (1469, 13377), (1911, 10283), (2373, 8281), (3549, 5537), (4407, 4459)]