81613364

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{673}}^1$

素因数の和:816

約数の個数: 48

約数和(自身を含む): 168489216

約数和(自身を除く): 86875852

約数列:

[1, 2, 4, 7, 14, 28, 61, 71, 122, 142, 244, 284, 427, 497, 673, 854, 994, 1346, 1708, 1988, 2692, 4331, 4711, 8662, 9422, 17324, 18844, 30317, 41053, 47783, 60634, 82106, 95566, 121268, 164212, 191132, 287371, 334481, 574742, 668962, 1149484, 1337924, 2914763, 5829526, 11659052, 20403341, 40806682, 81613364]

約数ペア:

[(1, 81613364), (2, 40806682), (4, 20403341), (7, 11659052), (14, 5829526), (28, 2914763), (61, 1337924), (71, 1149484), (122, 668962), (142, 574742), (244, 334481), (284, 287371), (427, 191132), (497, 164212), (673, 121268), (854, 95566), (994, 82106), (1346, 60634), (1708, 47783), (1988, 41053), (2692, 30317), (4331, 18844), (4711, 17324), (8662, 9422)]