19857964

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{229}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 42246400

約数和(自身を除く): 22388436

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 163, 229, 266, 326, 458, 532, 652, 916, 1141, 1603, 2282, 3097, 3206, 4351, 4564, 6194, 6412, 8702, 12388, 17404, 21679, 30457, 37327, 43358, 60914, 74654, 86716, 121828, 149308, 261289, 522578, 709213, 1045156, 1418426, 2836852, 4964491, 9928982, 19857964]

約数ペア:

[(1, 19857964), (2, 9928982), (4, 4964491), (7, 2836852), (14, 1418426), (19, 1045156), (28, 709213), (38, 522578), (76, 261289), (133, 149308), (163, 121828), (229, 86716), (266, 74654), (326, 60914), (458, 43358), (532, 37327), (652, 30457), (916, 21679), (1141, 17404), (1603, 12388), (2282, 8702), (3097, 6412), (3206, 6194), (4351, 4564)]