211673720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{1021}}^1$

素因数の和:1176

約数の個数: 64

約数和(自身を含む): 490069440

約数和(自身を除く): 278395720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 73, 142, 146, 284, 292, 355, 365, 568, 584, 710, 730, 1021, 1420, 1460, 2042, 2840, 2920, 4084, 5105, 5183, 8168, 10210, 10366, 20420, 20732, 25915, 40840, 41464, 51830, 72491, 74533, 103660, 144982, 149066, 207320, 289964, 298132, 362455, 372665, 579928, 596264, 724910, 745330, 1449820, 1490660, 2899640, 2981320, 5291843, 10583686, 21167372, 26459215, 42334744, 52918430, 105836860, 211673720]

約数ペア:

[(1, 211673720), (2, 105836860), (4, 52918430), (5, 42334744), (8, 26459215), (10, 21167372), (20, 10583686), (40, 5291843), (71, 2981320), (73, 2899640), (142, 1490660), (146, 1449820), (284, 745330), (292, 724910), (355, 596264), (365, 579928), (568, 372665), (584, 362455), (710, 298132), (730, 289964), (1021, 207320), (1420, 149066), (1460, 144982), (2042, 103660), (2840, 74533), (2920, 72491), (4084, 51830), (5105, 41464), (5183, 40840), (8168, 25915), (10210, 20732), (10366, 20420)]