31261797

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 54362880

約数和(自身を除く): 23101083

約数列:

[1, 3, 7, 9, 21, 29, 63, 71, 87, 203, 213, 241, 261, 497, 609, 639, 723, 1491, 1687, 1827, 2059, 2169, 4473, 5061, 6177, 6989, 14413, 15183, 17111, 18531, 20967, 43239, 48923, 51333, 62901, 119777, 129717, 146769, 153999, 359331, 440307, 496219, 1077993, 1488657, 3473533, 4465971, 10420599, 31261797]

約数ペア:

[(1, 31261797), (3, 10420599), (7, 4465971), (9, 3473533), (21, 1488657), (29, 1077993), (63, 496219), (71, 440307), (87, 359331), (203, 153999), (213, 146769), (241, 129717), (261, 119777), (497, 62901), (609, 51333), (639, 48923), (723, 43239), (1491, 20967), (1687, 18531), (1827, 17111), (2059, 15183), (2169, 14413), (4473, 6989), (5061, 6177)]