1561275

素因数分解:

$3^5\times 5^2\times {\mathrm{257}}^1$

素因数の和:282

約数の個数: 36

約数和(自身を含む): 2911272

約数和(自身を除く): 1349997

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 243, 257, 405, 675, 771, 1215, 1285, 2025, 2313, 3855, 6075, 6425, 6939, 11565, 19275, 20817, 34695, 57825, 62451, 104085, 173475, 312255, 520425, 1561275]

約数ペア:

[(1, 1561275), (3, 520425), (5, 312255), (9, 173475), (15, 104085), (25, 62451), (27, 57825), (45, 34695), (75, 20817), (81, 19275), (135, 11565), (225, 6939), (243, 6425), (257, 6075), (405, 3855), (675, 2313), (771, 2025), (1215, 1285)]