64951640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{124907}}^1$

素因数の和:124931

約数の個数: 32

約数和(自身を含む): 157384080

約数和(自身を除く): 92432440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 124907, 249814, 499628, 624535, 999256, 1249070, 1623791, 2498140, 3247582, 4996280, 6495164, 8118955, 12990328, 16237910, 32475820, 64951640]

約数ペア:

[(1, 64951640), (2, 32475820), (4, 16237910), (5, 12990328), (8, 8118955), (10, 6495164), (13, 4996280), (20, 3247582), (26, 2498140), (40, 1623791), (52, 1249070), (65, 999256), (104, 624535), (130, 499628), (260, 249814), (520, 124907)]