291260218

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1\times {\mathrm{491}}^1$

素因数の和:822

約数の個数: 32

約数和(自身を含む): 471847680

約数和(自身を除く): 180587462

約数列:

[1, 2, 17, 34, 73, 146, 239, 478, 491, 982, 1241, 2482, 4063, 8126, 8347, 16694, 17447, 34894, 35843, 71686, 117349, 234698, 296599, 593198, 609331, 1218662, 1994933, 3989866, 8566477, 17132954, 145630109, 291260218]

約数ペア:

[(1, 291260218), (2, 145630109), (17, 17132954), (34, 8566477), (73, 3989866), (146, 1994933), (239, 1218662), (478, 609331), (491, 593198), (982, 296599), (1241, 234698), (2482, 117349), (4063, 71686), (8126, 35843), (8347, 34894), (16694, 17447)]