289490018

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{397}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 456012480

約数和(自身を除く): 166522462

約数列:

[1, 2, 43, 61, 86, 122, 139, 278, 397, 794, 2623, 5246, 5977, 8479, 11954, 16958, 17071, 24217, 34142, 48434, 55183, 110366, 364597, 729194, 1041331, 2082662, 2372869, 3366163, 4745738, 6732326, 144745009, 289490018]

約数ペア:

[(1, 289490018), (2, 144745009), (43, 6732326), (61, 4745738), (86, 3366163), (122, 2372869), (139, 2082662), (278, 1041331), (397, 729194), (794, 364597), (2623, 110366), (5246, 55183), (5977, 48434), (8479, 34142), (11954, 24217), (16958, 17071)]