28634940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{619}}^1$

素因数の和:891

約数の個数: 72

約数和(自身を含む): 87338160

約数和(自身を除く): 58703220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 257, 514, 619, 771, 1028, 1238, 1285, 1542, 1857, 2313, 2476, 2570, 3084, 3095, 3714, 3855, 4626, 5140, 5571, 6190, 7428, 7710, 9252, 9285, 11142, 11565, 12380, 15420, 18570, 22284, 23130, 27855, 37140, 46260, 55710, 111420, 159083, 318166, 477249, 636332, 795415, 954498, 1431747, 1590830, 1908996, 2386245, 2863494, 3181660, 4772490, 5726988, 7158735, 9544980, 14317470, 28634940]

約数ペア:

[(1, 28634940), (2, 14317470), (3, 9544980), (4, 7158735), (5, 5726988), (6, 4772490), (9, 3181660), (10, 2863494), (12, 2386245), (15, 1908996), (18, 1590830), (20, 1431747), (30, 954498), (36, 795415), (45, 636332), (60, 477249), (90, 318166), (180, 159083), (257, 111420), (514, 55710), (619, 46260), (771, 37140), (1028, 27855), (1238, 23130), (1285, 22284), (1542, 18570), (1857, 15420), (2313, 12380), (2476, 11565), (2570, 11142), (3084, 9285), (3095, 9252), (3714, 7710), (3855, 7428), (4626, 6190), (5140, 5571)]