664240

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1$

素因数の和:74

約数の個数: 60

約数和(自身を含む): 1700784

約数和(自身を除く): 1036544

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 38, 40, 46, 76, 80, 92, 95, 115, 152, 184, 190, 230, 304, 361, 368, 380, 437, 460, 722, 760, 874, 920, 1444, 1520, 1748, 1805, 1840, 2185, 2888, 3496, 3610, 4370, 5776, 6992, 7220, 8303, 8740, 14440, 16606, 17480, 28880, 33212, 34960, 41515, 66424, 83030, 132848, 166060, 332120, 664240]

約数ペア:

[(1, 664240), (2, 332120), (4, 166060), (5, 132848), (8, 83030), (10, 66424), (16, 41515), (19, 34960), (20, 33212), (23, 28880), (38, 17480), (40, 16606), (46, 14440), (76, 8740), (80, 8303), (92, 7220), (95, 6992), (115, 5776), (152, 4370), (184, 3610), (190, 3496), (230, 2888), (304, 2185), (361, 1840), (368, 1805), (380, 1748), (437, 1520), (460, 1444), (722, 920), (760, 874)]