19487900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1$

素因数の和:303

約数の個数: 72

約数和(自身を含む): 45517920

約数和(自身を除く): 26030020

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 37, 46, 50, 74, 92, 100, 115, 148, 185, 229, 230, 370, 458, 460, 575, 740, 851, 916, 925, 1145, 1150, 1702, 1850, 2290, 2300, 3404, 3700, 4255, 4580, 5267, 5725, 8473, 8510, 10534, 11450, 16946, 17020, 21068, 21275, 22900, 26335, 33892, 42365, 42550, 52670, 84730, 85100, 105340, 131675, 169460, 194879, 211825, 263350, 389758, 423650, 526700, 779516, 847300, 974395, 1948790, 3897580, 4871975, 9743950, 19487900]

約数ペア:

[(1, 19487900), (2, 9743950), (4, 4871975), (5, 3897580), (10, 1948790), (20, 974395), (23, 847300), (25, 779516), (37, 526700), (46, 423650), (50, 389758), (74, 263350), (92, 211825), (100, 194879), (115, 169460), (148, 131675), (185, 105340), (229, 85100), (230, 84730), (370, 52670), (458, 42550), (460, 42365), (575, 33892), (740, 26335), (851, 22900), (916, 21275), (925, 21068), (1145, 17020), (1150, 16946), (1702, 11450), (1850, 10534), (2290, 8510), (2300, 8473), (3404, 5725), (3700, 5267), (4255, 4580)]