28020525

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{991}}^1$

素因数の和:1046

約数の個数: 48

約数和(自身を含む): 51663360

約数和(自身を除く): 23642835

約数列:

[1, 3, 5, 13, 15, 25, 29, 39, 65, 75, 87, 145, 195, 325, 377, 435, 725, 975, 991, 1131, 1885, 2175, 2973, 4955, 5655, 9425, 12883, 14865, 24775, 28275, 28739, 38649, 64415, 74325, 86217, 143695, 193245, 322075, 373607, 431085, 718475, 966225, 1120821, 1868035, 2155425, 5604105, 9340175, 28020525]

約数ペア:

[(1, 28020525), (3, 9340175), (5, 5604105), (13, 2155425), (15, 1868035), (25, 1120821), (29, 966225), (39, 718475), (65, 431085), (75, 373607), (87, 322075), (145, 193245), (195, 143695), (325, 86217), (377, 74325), (435, 64415), (725, 38649), (975, 28739), (991, 28275), (1131, 24775), (1885, 14865), (2175, 12883), (2973, 9425), (4955, 5655)]