13139620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{521}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 30079728

約数和(自身を除く): 16940108

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 97, 130, 194, 260, 388, 485, 521, 970, 1042, 1261, 1940, 2084, 2522, 2605, 5044, 5210, 6305, 6773, 10420, 12610, 13546, 25220, 27092, 33865, 50537, 67730, 101074, 135460, 202148, 252685, 505370, 656981, 1010740, 1313962, 2627924, 3284905, 6569810, 13139620]

約数ペア:

[(1, 13139620), (2, 6569810), (4, 3284905), (5, 2627924), (10, 1313962), (13, 1010740), (20, 656981), (26, 505370), (52, 252685), (65, 202148), (97, 135460), (130, 101074), (194, 67730), (260, 50537), (388, 33865), (485, 27092), (521, 25220), (970, 13546), (1042, 12610), (1261, 10420), (1940, 6773), (2084, 6305), (2522, 5210), (2605, 5044)]