17989720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1367}}^1$

素因数の和:1432

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 29288360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1316, 1367, 1645, 1880, 2632, 2734, 3290, 5468, 6580, 6835, 9569, 10936, 13160, 13670, 19138, 27340, 38276, 47845, 54680, 64249, 76552, 95690, 128498, 191380, 256996, 321245, 382760, 449743, 513992, 642490, 899486, 1284980, 1798972, 2248715, 2569960, 3597944, 4497430, 8994860, 17989720]

約数ペア:

[(1, 17989720), (2, 8994860), (4, 4497430), (5, 3597944), (7, 2569960), (8, 2248715), (10, 1798972), (14, 1284980), (20, 899486), (28, 642490), (35, 513992), (40, 449743), (47, 382760), (56, 321245), (70, 256996), (94, 191380), (140, 128498), (188, 95690), (235, 76552), (280, 64249), (329, 54680), (376, 47845), (470, 38276), (658, 27340), (940, 19138), (1316, 13670), (1367, 13160), (1645, 10936), (1880, 9569), (2632, 6835), (2734, 6580), (3290, 5468)]