28780760

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{577}}^1$

素因数の和:660

約数の個数: 64

約数和(自身を含む): 68666400

約数和(自身を除く): 39885640

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 43, 58, 86, 116, 145, 172, 215, 232, 290, 344, 430, 577, 580, 860, 1154, 1160, 1247, 1720, 2308, 2494, 2885, 4616, 4988, 5770, 6235, 9976, 11540, 12470, 16733, 23080, 24811, 24940, 33466, 49622, 49880, 66932, 83665, 99244, 124055, 133864, 167330, 198488, 248110, 334660, 496220, 669320, 719519, 992440, 1439038, 2878076, 3597595, 5756152, 7195190, 14390380, 28780760]

約数ペア:

[(1, 28780760), (2, 14390380), (4, 7195190), (5, 5756152), (8, 3597595), (10, 2878076), (20, 1439038), (29, 992440), (40, 719519), (43, 669320), (58, 496220), (86, 334660), (116, 248110), (145, 198488), (172, 167330), (215, 133864), (232, 124055), (290, 99244), (344, 83665), (430, 66932), (577, 49880), (580, 49622), (860, 33466), (1154, 24940), (1160, 24811), (1247, 23080), (1720, 16733), (2308, 12470), (2494, 11540), (2885, 9976), (4616, 6235), (4988, 5770)]