20178015

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1$

素因数の和:464

約数の個数: 64

約数和(自身を含む): 39674880

約数和(自身を除く): 19496865

約数列:

[1, 3, 5, 11, 13, 15, 23, 33, 39, 55, 65, 69, 115, 143, 165, 195, 253, 299, 345, 409, 429, 715, 759, 897, 1227, 1265, 1495, 2045, 2145, 3289, 3795, 4485, 4499, 5317, 6135, 9407, 9867, 13497, 15951, 16445, 22495, 26585, 28221, 47035, 49335, 58487, 67485, 79755, 103477, 122291, 141105, 175461, 292435, 310431, 366873, 517385, 611455, 877305, 1345201, 1552155, 1834365, 4035603, 6726005, 20178015]

約数ペア:

[(1, 20178015), (3, 6726005), (5, 4035603), (11, 1834365), (13, 1552155), (15, 1345201), (23, 877305), (33, 611455), (39, 517385), (55, 366873), (65, 310431), (69, 292435), (115, 175461), (143, 141105), (165, 122291), (195, 103477), (253, 79755), (299, 67485), (345, 58487), (409, 49335), (429, 47035), (715, 28221), (759, 26585), (897, 22495), (1227, 16445), (1265, 15951), (1495, 13497), (2045, 9867), (2145, 9407), (3289, 6135), (3795, 5317), (4485, 4499)]