81877760

素因数分解:

$2^8\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1361}}^1$

素因数の和:1429

約数の個数: 72

約数和(自身を含む): 200442816

約数和(自身を除く): 118565056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 188, 235, 256, 320, 376, 470, 640, 752, 940, 1280, 1361, 1504, 1880, 2722, 3008, 3760, 5444, 6016, 6805, 7520, 10888, 12032, 13610, 15040, 21776, 27220, 30080, 43552, 54440, 60160, 63967, 87104, 108880, 127934, 174208, 217760, 255868, 319835, 348416, 435520, 511736, 639670, 871040, 1023472, 1279340, 1742080, 2046944, 2558680, 4093888, 5117360, 8187776, 10234720, 16375552, 20469440, 40938880, 81877760]

約数ペア:

[(1, 81877760), (2, 40938880), (4, 20469440), (5, 16375552), (8, 10234720), (10, 8187776), (16, 5117360), (20, 4093888), (32, 2558680), (40, 2046944), (47, 1742080), (64, 1279340), (80, 1023472), (94, 871040), (128, 639670), (160, 511736), (188, 435520), (235, 348416), (256, 319835), (320, 255868), (376, 217760), (470, 174208), (640, 127934), (752, 108880), (940, 87104), (1280, 63967), (1361, 60160), (1504, 54440), (1880, 43552), (2722, 30080), (3008, 27220), (3760, 21776), (5444, 15040), (6016, 13610), (6805, 12032), (7520, 10888)]