9781280

素因数分解:

$2^5\times 5^1\times {\mathrm{113}}^1\times {\mathrm{541}}^1$

素因数の和:669

約数の個数: 48

約数和(自身を含む): 23355864

約数和(自身を除く): 13574584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 113, 160, 226, 452, 541, 565, 904, 1082, 1130, 1808, 2164, 2260, 2705, 3616, 4328, 4520, 5410, 8656, 9040, 10820, 17312, 18080, 21640, 43280, 61133, 86560, 122266, 244532, 305665, 489064, 611330, 978128, 1222660, 1956256, 2445320, 4890640, 9781280]

約数ペア:

[(1, 9781280), (2, 4890640), (4, 2445320), (5, 1956256), (8, 1222660), (10, 978128), (16, 611330), (20, 489064), (32, 305665), (40, 244532), (80, 122266), (113, 86560), (160, 61133), (226, 43280), (452, 21640), (541, 18080), (565, 17312), (904, 10820), (1082, 9040), (1130, 8656), (1808, 5410), (2164, 4520), (2260, 4328), (2705, 3616)]