320523880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{258487}}^1$

素因数の和:258529

約数の個数: 32

約数和(自身を含む): 744445440

約数和(自身を除く): 423921560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 258487, 516974, 1033948, 1292435, 2067896, 2584870, 5169740, 8013097, 10339480, 16026194, 32052388, 40065485, 64104776, 80130970, 160261940, 320523880]

約数ペア:

[(1, 320523880), (2, 160261940), (4, 80130970), (5, 64104776), (8, 40065485), (10, 32052388), (20, 16026194), (31, 10339480), (40, 8013097), (62, 5169740), (124, 2584870), (155, 2067896), (248, 1292435), (310, 1033948), (620, 516974), (1240, 258487)]