1279395

素因数分解:

$3^9\times 5^1\times {\mathrm{13}}^1$

素因数の和:45

約数の個数: 40

約数和(自身を含む): 2480016

約数和(自身を除く): 1200621

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 243, 351, 405, 585, 729, 1053, 1215, 1755, 2187, 3159, 3645, 5265, 6561, 9477, 10935, 15795, 19683, 28431, 32805, 47385, 85293, 98415, 142155, 255879, 426465, 1279395]

約数ペア:

[(1, 1279395), (3, 426465), (5, 255879), (9, 142155), (13, 98415), (15, 85293), (27, 47385), (39, 32805), (45, 28431), (65, 19683), (81, 15795), (117, 10935), (135, 9477), (195, 6561), (243, 5265), (351, 3645), (405, 3159), (585, 2187), (729, 1755), (1053, 1215)]