128857880

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{13367}}^1$

素因数の和:13619

約数の個数: 32

約数和(自身を含む): 291155040

約数和(自身を除く): 162297160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1928, 2410, 4820, 9640, 13367, 26734, 53468, 66835, 106936, 133670, 267340, 534680, 3221447, 6442894, 12885788, 16107235, 25771576, 32214470, 64428940, 128857880]

約数ペア:

[(1, 128857880), (2, 64428940), (4, 32214470), (5, 25771576), (8, 16107235), (10, 12885788), (20, 6442894), (40, 3221447), (241, 534680), (482, 267340), (964, 133670), (1205, 106936), (1928, 66835), (2410, 53468), (4820, 26734), (9640, 13367)]