28685720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1933}}^1$

素因数の和:2004

約数の個数: 64

約数和(自身を含む): 75193920

約数和(自身を除く): 46508200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 70, 106, 140, 212, 265, 280, 371, 424, 530, 742, 1060, 1484, 1855, 1933, 2120, 2968, 3710, 3866, 7420, 7732, 9665, 13531, 14840, 15464, 19330, 27062, 38660, 54124, 67655, 77320, 102449, 108248, 135310, 204898, 270620, 409796, 512245, 541240, 717143, 819592, 1024490, 1434286, 2048980, 2868572, 3585715, 4097960, 5737144, 7171430, 14342860, 28685720]

約数ペア:

[(1, 28685720), (2, 14342860), (4, 7171430), (5, 5737144), (7, 4097960), (8, 3585715), (10, 2868572), (14, 2048980), (20, 1434286), (28, 1024490), (35, 819592), (40, 717143), (53, 541240), (56, 512245), (70, 409796), (106, 270620), (140, 204898), (212, 135310), (265, 108248), (280, 102449), (371, 77320), (424, 67655), (530, 54124), (742, 38660), (1060, 27062), (1484, 19330), (1855, 15464), (1933, 14840), (2120, 13531), (2968, 9665), (3710, 7732), (3866, 7420)]