642735

素因数分解:

$3^5\times 5^1\times {\mathrm{23}}^2$

素因数の和:66

約数の個数: 36

約数和(自身を含む): 1207752

約数和(自身を除く): 565017

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 243, 345, 405, 529, 621, 1035, 1215, 1587, 1863, 2645, 3105, 4761, 5589, 7935, 9315, 14283, 23805, 27945, 42849, 71415, 128547, 214245, 642735]

約数ペア:

[(1, 642735), (3, 214245), (5, 128547), (9, 71415), (15, 42849), (23, 27945), (27, 23805), (45, 14283), (69, 9315), (81, 7935), (115, 5589), (135, 4761), (207, 3105), (243, 2645), (345, 1863), (405, 1587), (529, 1215), (621, 1035)]