20624175

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:681

約数の個数: 72

約数和(自身を含む): 43465968

約数和(自身を除く): 22841793

約数列:

[1, 3, 5, 9, 11, 13, 15, 25, 33, 39, 45, 55, 65, 75, 99, 117, 143, 165, 195, 225, 275, 325, 429, 495, 585, 641, 715, 825, 975, 1287, 1923, 2145, 2475, 2925, 3205, 3575, 5769, 6435, 7051, 8333, 9615, 10725, 16025, 21153, 24999, 28845, 32175, 35255, 41665, 48075, 63459, 74997, 91663, 105765, 124995, 144225, 176275, 208325, 274989, 317295, 374985, 458315, 528825, 624975, 824967, 1374945, 1586475, 1874925, 2291575, 4124835, 6874725, 20624175]

約数ペア:

[(1, 20624175), (3, 6874725), (5, 4124835), (9, 2291575), (11, 1874925), (13, 1586475), (15, 1374945), (25, 824967), (33, 624975), (39, 528825), (45, 458315), (55, 374985), (65, 317295), (75, 274989), (99, 208325), (117, 176275), (143, 144225), (165, 124995), (195, 105765), (225, 91663), (275, 74997), (325, 63459), (429, 48075), (495, 41665), (585, 35255), (641, 32175), (715, 28845), (825, 24999), (975, 21153), (1287, 16025), (1923, 10725), (2145, 9615), (2475, 8333), (2925, 7051), (3205, 6435), (3575, 5769)]