65431840

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4049}}^1$

素因数の和:4165

約数の個数: 48

約数和(自身を含む): 156151800

約数和(自身を除く): 90719960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1616, 2020, 3232, 4040, 4049, 8080, 8098, 16160, 16196, 20245, 32392, 40490, 64784, 80980, 129568, 161960, 323920, 408949, 647840, 817898, 1635796, 2044745, 3271592, 4089490, 6543184, 8178980, 13086368, 16357960, 32715920, 65431840]

約数ペア:

[(1, 65431840), (2, 32715920), (4, 16357960), (5, 13086368), (8, 8178980), (10, 6543184), (16, 4089490), (20, 3271592), (32, 2044745), (40, 1635796), (80, 817898), (101, 647840), (160, 408949), (202, 323920), (404, 161960), (505, 129568), (808, 80980), (1010, 64784), (1616, 40490), (2020, 32392), (3232, 20245), (4040, 16196), (4049, 16160), (8080, 8098)]