2721940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1$

素因数の和:89

約数の個数: 72

約数和(自身を含む): 6720840

約数和(自身を除く): 3998900

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 29, 38, 52, 58, 65, 76, 95, 116, 130, 145, 190, 247, 260, 290, 361, 377, 380, 494, 551, 580, 722, 754, 988, 1102, 1235, 1444, 1508, 1805, 1885, 2204, 2470, 2755, 3610, 3770, 4693, 4940, 5510, 7163, 7220, 7540, 9386, 10469, 11020, 14326, 18772, 20938, 23465, 28652, 35815, 41876, 46930, 52345, 71630, 93860, 104690, 136097, 143260, 209380, 272194, 544388, 680485, 1360970, 2721940]

約数ペア:

[(1, 2721940), (2, 1360970), (4, 680485), (5, 544388), (10, 272194), (13, 209380), (19, 143260), (20, 136097), (26, 104690), (29, 93860), (38, 71630), (52, 52345), (58, 46930), (65, 41876), (76, 35815), (95, 28652), (116, 23465), (130, 20938), (145, 18772), (190, 14326), (247, 11020), (260, 10469), (290, 9386), (361, 7540), (377, 7220), (380, 7163), (494, 5510), (551, 4940), (580, 4693), (722, 3770), (754, 3610), (988, 2755), (1102, 2470), (1235, 2204), (1444, 1885), (1508, 1805)]