25720890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{65951}}^1$

素因数の和:65974

約数の個数: 32

約数和(自身を含む): 66479616

約数和(自身を除く): 40758726

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 65951, 131902, 197853, 329755, 395706, 659510, 857363, 989265, 1714726, 1978530, 2572089, 4286815, 5144178, 8573630, 12860445, 25720890]

約数ペア:

[(1, 25720890), (2, 12860445), (3, 8573630), (5, 5144178), (6, 4286815), (10, 2572089), (13, 1978530), (15, 1714726), (26, 989265), (30, 857363), (39, 659510), (65, 395706), (78, 329755), (130, 197853), (195, 131902), (390, 65951)]