39924980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{269}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 86682960

約数和(自身を除く): 46757980

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 181, 205, 269, 362, 410, 538, 724, 820, 905, 1076, 1345, 1810, 2690, 3620, 5380, 7421, 11029, 14842, 22058, 29684, 37105, 44116, 48689, 55145, 74210, 97378, 110290, 148420, 194756, 220580, 243445, 486890, 973780, 1996249, 3992498, 7984996, 9981245, 19962490, 39924980]

約数ペア:

[(1, 39924980), (2, 19962490), (4, 9981245), (5, 7984996), (10, 3992498), (20, 1996249), (41, 973780), (82, 486890), (164, 243445), (181, 220580), (205, 194756), (269, 148420), (362, 110290), (410, 97378), (538, 74210), (724, 55145), (820, 48689), (905, 44116), (1076, 37105), (1345, 29684), (1810, 22058), (2690, 14842), (3620, 11029), (5380, 7421)]