7831212879

素因数分解:

$3^1\times 7^2\times {\mathrm{61}}^2\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:381

約数の個数: 72

約数和(自身を含む): 12558349440

約数和(自身を除く): 4727136561

約数列:

[1, 3, 7, 21, 49, 61, 103, 139, 147, 183, 309, 417, 427, 721, 973, 1281, 2163, 2919, 2989, 3721, 5047, 6283, 6811, 8479, 8967, 11163, 14317, 15141, 18849, 20433, 25437, 26047, 42951, 43981, 59353, 78141, 100219, 131943, 178059, 182329, 300657, 307867, 383263, 415471, 517219, 546987, 701533, 873337, 923601, 1149789, 1246413, 1551657, 2104599, 2620011, 2682841, 3620533, 6113359, 8048523, 10861599, 18340077, 18779887, 25343731, 42793513, 53273557, 56339661, 76031193, 128380539, 159820671, 372914899, 1118744697, 2610404293, 7831212879]

約数ペア:

[(1, 7831212879), (3, 2610404293), (7, 1118744697), (21, 372914899), (49, 159820671), (61, 128380539), (103, 76031193), (139, 56339661), (147, 53273557), (183, 42793513), (309, 25343731), (417, 18779887), (427, 18340077), (721, 10861599), (973, 8048523), (1281, 6113359), (2163, 3620533), (2919, 2682841), (2989, 2620011), (3721, 2104599), (5047, 1551657), (6283, 1246413), (6811, 1149789), (8479, 923601), (8967, 873337), (11163, 701533), (14317, 546987), (15141, 517219), (18849, 415471), (20433, 383263), (25437, 307867), (26047, 300657), (42951, 182329), (43981, 178059), (59353, 131943), (78141, 100219)]