989968460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{479}}^1\times {\mathrm{7949}}^1$

素因数の和:8450

約数の個数: 48

約数和(自身を含む): 2243808000

約数和(自身を除く): 1253839540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 479, 958, 1916, 2395, 4790, 6227, 7949, 9580, 12454, 15898, 24908, 31135, 31796, 39745, 62270, 79490, 103337, 124540, 158980, 206674, 413348, 516685, 1033370, 2066740, 3807571, 7615142, 15230284, 19037855, 38075710, 49498423, 76151420, 98996846, 197993692, 247492115, 494984230, 989968460]

約数ペア:

[(1, 989968460), (2, 494984230), (4, 247492115), (5, 197993692), (10, 98996846), (13, 76151420), (20, 49498423), (26, 38075710), (52, 19037855), (65, 15230284), (130, 7615142), (260, 3807571), (479, 2066740), (958, 1033370), (1916, 516685), (2395, 413348), (4790, 206674), (6227, 158980), (7949, 124540), (9580, 103337), (12454, 79490), (15898, 62270), (24908, 39745), (31135, 31796)]