19882850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^3\times {\mathrm{181}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 40283880

約数和(自身を除く): 20401030

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 169, 181, 325, 338, 362, 650, 845, 905, 1690, 1810, 2197, 2353, 4225, 4394, 4525, 4706, 8450, 9050, 10985, 11765, 21970, 23530, 30589, 54925, 58825, 61178, 109850, 117650, 152945, 305890, 397657, 764725, 795314, 1529450, 1988285, 3976570, 9941425, 19882850]

約数ペア:

[(1, 19882850), (2, 9941425), (5, 3976570), (10, 1988285), (13, 1529450), (25, 795314), (26, 764725), (50, 397657), (65, 305890), (130, 152945), (169, 117650), (181, 109850), (325, 61178), (338, 58825), (362, 54925), (650, 30589), (845, 23530), (905, 21970), (1690, 11765), (1810, 10985), (2197, 9050), (2353, 8450), (4225, 4706), (4394, 4525)]