20887620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{439}}^1$

素因数の和:525

約数の個数: 96

約数和(自身を含む): 64162560

約数和(自身を除く): 43274940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 61, 65, 78, 122, 130, 156, 183, 195, 244, 260, 305, 366, 390, 439, 610, 732, 780, 793, 878, 915, 1220, 1317, 1586, 1756, 1830, 2195, 2379, 2634, 3172, 3660, 3965, 4390, 4758, 5268, 5707, 6585, 7930, 8780, 9516, 11414, 11895, 13170, 15860, 17121, 22828, 23790, 26340, 26779, 28535, 34242, 47580, 53558, 57070, 68484, 80337, 85605, 107116, 114140, 133895, 160674, 171210, 267790, 321348, 342420, 348127, 401685, 535580, 696254, 803370, 1044381, 1392508, 1606740, 1740635, 2088762, 3481270, 4177524, 5221905, 6962540, 10443810, 20887620]

約数ペア:

[(1, 20887620), (2, 10443810), (3, 6962540), (4, 5221905), (5, 4177524), (6, 3481270), (10, 2088762), (12, 1740635), (13, 1606740), (15, 1392508), (20, 1044381), (26, 803370), (30, 696254), (39, 535580), (52, 401685), (60, 348127), (61, 342420), (65, 321348), (78, 267790), (122, 171210), (130, 160674), (156, 133895), (183, 114140), (195, 107116), (244, 85605), (260, 80337), (305, 68484), (366, 57070), (390, 53558), (439, 47580), (610, 34242), (732, 28535), (780, 26779), (793, 26340), (878, 23790), (915, 22828), (1220, 17121), (1317, 15860), (1586, 13170), (1756, 11895), (1830, 11414), (2195, 9516), (2379, 8780), (2634, 7930), (3172, 6585), (3660, 5707), (3965, 5268), (4390, 4758)]