19979750

素因数分解:

$2^1\times 5^3\times 7^3\times {\mathrm{233}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 43804800

約数和(自身を除く): 23825050

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 98, 125, 175, 233, 245, 250, 343, 350, 466, 490, 686, 875, 1165, 1225, 1631, 1715, 1750, 2330, 2450, 3262, 3430, 5825, 6125, 8155, 8575, 11417, 11650, 12250, 16310, 17150, 22834, 29125, 40775, 42875, 57085, 58250, 79919, 81550, 85750, 114170, 159838, 203875, 285425, 399595, 407750, 570850, 799190, 1427125, 1997975, 2854250, 3995950, 9989875, 19979750]

約数ペア:

[(1, 19979750), (2, 9989875), (5, 3995950), (7, 2854250), (10, 1997975), (14, 1427125), (25, 799190), (35, 570850), (49, 407750), (50, 399595), (70, 285425), (98, 203875), (125, 159838), (175, 114170), (233, 85750), (245, 81550), (250, 79919), (343, 58250), (350, 57085), (466, 42875), (490, 40775), (686, 29125), (875, 22834), (1165, 17150), (1225, 16310), (1631, 12250), (1715, 11650), (1750, 11417), (2330, 8575), (2450, 8155), (3262, 6125), (3430, 5825)]