40720905

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^2\times {\mathrm{661}}^1$

素因数の和:746

約数の個数: 36

約数和(自身を含む): 72651852

約数和(自身を除く): 31930947

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 661, 1369, 1665, 1983, 3305, 4107, 5949, 6845, 9915, 12321, 20535, 24457, 29745, 61605, 73371, 122285, 220113, 366855, 904909, 1100565, 2714727, 4524545, 8144181, 13573635, 40720905]

約数ペア:

[(1, 40720905), (3, 13573635), (5, 8144181), (9, 4524545), (15, 2714727), (37, 1100565), (45, 904909), (111, 366855), (185, 220113), (333, 122285), (555, 73371), (661, 61605), (1369, 29745), (1665, 24457), (1983, 20535), (3305, 12321), (4107, 9915), (5949, 6845)]