278360890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{39937}}^1$

素因数の和:40002

約数の個数: 32

約数和(自身を含む): 543476304

約数和(自身を除く): 265115414

約数列:

[1, 2, 5, 10, 17, 34, 41, 82, 85, 170, 205, 410, 697, 1394, 3485, 6970, 39937, 79874, 199685, 399370, 678929, 1357858, 1637417, 3274834, 3394645, 6789290, 8187085, 16374170, 27836089, 55672178, 139180445, 278360890]

約数ペア:

[(1, 278360890), (2, 139180445), (5, 55672178), (10, 27836089), (17, 16374170), (34, 8187085), (41, 6789290), (82, 3394645), (85, 3274834), (170, 1637417), (205, 1357858), (410, 678929), (697, 399370), (1394, 199685), (3485, 79874), (6970, 39937)]