397334540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{68743}}^1$

素因数の和:68786

約数の個数: 36

約数和(自身を含む): 886385136

約数和(自身を除く): 489050596

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 5780, 68743, 137486, 274972, 343715, 687430, 1168631, 1374860, 2337262, 4674524, 5843155, 11686310, 19866727, 23372620, 39733454, 79466908, 99333635, 198667270, 397334540]

約数ペア:

[(1, 397334540), (2, 198667270), (4, 99333635), (5, 79466908), (10, 39733454), (17, 23372620), (20, 19866727), (34, 11686310), (68, 5843155), (85, 4674524), (170, 2337262), (289, 1374860), (340, 1168631), (578, 687430), (1156, 343715), (1445, 274972), (2890, 137486), (5780, 68743)]