18488900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{263}}^1$

素因数の和:333

約数の個数: 72

約数和(自身を含む): 43538880

約数和(自身を除く): 25049980

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 37, 38, 50, 74, 76, 95, 100, 148, 185, 190, 263, 370, 380, 475, 526, 703, 740, 925, 950, 1052, 1315, 1406, 1850, 1900, 2630, 2812, 3515, 3700, 4997, 5260, 6575, 7030, 9731, 9994, 13150, 14060, 17575, 19462, 19988, 24985, 26300, 35150, 38924, 48655, 49970, 70300, 97310, 99940, 124925, 184889, 194620, 243275, 249850, 369778, 486550, 499700, 739556, 924445, 973100, 1848890, 3697780, 4622225, 9244450, 18488900]

約数ペア:

[(1, 18488900), (2, 9244450), (4, 4622225), (5, 3697780), (10, 1848890), (19, 973100), (20, 924445), (25, 739556), (37, 499700), (38, 486550), (50, 369778), (74, 249850), (76, 243275), (95, 194620), (100, 184889), (148, 124925), (185, 99940), (190, 97310), (263, 70300), (370, 49970), (380, 48655), (475, 38924), (526, 35150), (703, 26300), (740, 24985), (925, 19988), (950, 19462), (1052, 17575), (1315, 14060), (1406, 13150), (1850, 9994), (1900, 9731), (2630, 7030), (2812, 6575), (3515, 5260), (3700, 4997)]