21856720

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{9421}}^1$

素因数の和:9463

約数の個数: 40

約数和(自身を含む): 52574760

約数和(自身を除く): 30718040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 9421, 18842, 37684, 47105, 75368, 94210, 150736, 188420, 273209, 376840, 546418, 753680, 1092836, 1366045, 2185672, 2732090, 4371344, 5464180, 10928360, 21856720]

約数ペア:

[(1, 21856720), (2, 10928360), (4, 5464180), (5, 4371344), (8, 2732090), (10, 2185672), (16, 1366045), (20, 1092836), (29, 753680), (40, 546418), (58, 376840), (80, 273209), (116, 188420), (145, 150736), (232, 94210), (290, 75368), (464, 47105), (580, 37684), (1160, 18842), (2320, 9421)]