18857500

素因数分解:

$2^2\times 5^4\times {\mathrm{19}}^1\times {\mathrm{397}}^1$

素因数の和:440

約数の個数: 60

約数和(自身を含む): 43517320

約数和(自身を除く): 24659820

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 397, 475, 500, 625, 794, 950, 1250, 1588, 1900, 1985, 2375, 2500, 3970, 4750, 7543, 7940, 9500, 9925, 11875, 15086, 19850, 23750, 30172, 37715, 39700, 47500, 49625, 75430, 99250, 150860, 188575, 198500, 248125, 377150, 496250, 754300, 942875, 992500, 1885750, 3771500, 4714375, 9428750, 18857500]

約数ペア:

[(1, 18857500), (2, 9428750), (4, 4714375), (5, 3771500), (10, 1885750), (19, 992500), (20, 942875), (25, 754300), (38, 496250), (50, 377150), (76, 248125), (95, 198500), (100, 188575), (125, 150860), (190, 99250), (250, 75430), (380, 49625), (397, 47500), (475, 39700), (500, 37715), (625, 30172), (794, 23750), (950, 19850), (1250, 15086), (1588, 11875), (1900, 9925), (1985, 9500), (2375, 7940), (2500, 7543), (3970, 4750)]