20353450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{181}}^1$

素因数の和:379

約数の個数: 48

約数和(自身を含む): 41231736

約数和(自身を除く): 20878286

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 173, 181, 325, 346, 362, 650, 865, 905, 1730, 1810, 2249, 2353, 4325, 4498, 4525, 4706, 8650, 9050, 11245, 11765, 22490, 23530, 31313, 56225, 58825, 62626, 112450, 117650, 156565, 313130, 407069, 782825, 814138, 1565650, 2035345, 4070690, 10176725, 20353450]

約数ペア:

[(1, 20353450), (2, 10176725), (5, 4070690), (10, 2035345), (13, 1565650), (25, 814138), (26, 782825), (50, 407069), (65, 313130), (130, 156565), (173, 117650), (181, 112450), (325, 62626), (346, 58825), (362, 56225), (650, 31313), (865, 23530), (905, 22490), (1730, 11765), (1810, 11245), (2249, 9050), (2353, 8650), (4325, 4706), (4498, 4525)]