2809660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 7124544

約数和(自身を除く): 4314884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 49, 61, 70, 94, 98, 122, 140, 188, 196, 235, 244, 245, 305, 329, 427, 470, 490, 610, 658, 854, 940, 980, 1220, 1316, 1645, 1708, 2135, 2303, 2867, 2989, 3290, 4270, 4606, 5734, 5978, 6580, 8540, 9212, 11468, 11515, 11956, 14335, 14945, 20069, 23030, 28670, 29890, 40138, 46060, 57340, 59780, 80276, 100345, 140483, 200690, 280966, 401380, 561932, 702415, 1404830, 2809660]

約数ペア:

[(1, 2809660), (2, 1404830), (4, 702415), (5, 561932), (7, 401380), (10, 280966), (14, 200690), (20, 140483), (28, 100345), (35, 80276), (47, 59780), (49, 57340), (61, 46060), (70, 40138), (94, 29890), (98, 28670), (122, 23030), (140, 20069), (188, 14945), (196, 14335), (235, 11956), (244, 11515), (245, 11468), (305, 9212), (329, 8540), (427, 6580), (470, 5978), (490, 5734), (610, 4606), (658, 4270), (854, 3290), (940, 2989), (980, 2867), (1220, 2303), (1316, 2135), (1645, 1708)]