19941640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1381}}^1$

素因数の和:1430

約数の個数: 48

約数和(自身を含む): 47388780

約数和(自身を除く): 27447140

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1381, 1444, 1805, 2762, 2888, 3610, 5524, 6905, 7220, 11048, 13810, 14440, 26239, 27620, 52478, 55240, 104956, 131195, 209912, 262390, 498541, 524780, 997082, 1049560, 1994164, 2492705, 3988328, 4985410, 9970820, 19941640]

約数ペア:

[(1, 19941640), (2, 9970820), (4, 4985410), (5, 3988328), (8, 2492705), (10, 1994164), (19, 1049560), (20, 997082), (38, 524780), (40, 498541), (76, 262390), (95, 209912), (152, 131195), (190, 104956), (361, 55240), (380, 52478), (722, 27620), (760, 26239), (1381, 14440), (1444, 13810), (1805, 11048), (2762, 7220), (2888, 6905), (3610, 5524)]