87211880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{941}}^1$

素因数の和:1290

約数の個数: 64

約数和(自身を含む): 225175680

約数和(自身を除く): 137963800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 331, 662, 941, 1324, 1655, 1882, 2317, 2648, 3310, 3764, 4634, 4705, 6587, 6620, 7528, 9268, 9410, 11585, 13174, 13240, 18536, 18820, 23170, 26348, 32935, 37640, 46340, 52696, 65870, 92680, 131740, 263480, 311471, 622942, 1245884, 1557355, 2180297, 2491768, 3114710, 4360594, 6229420, 8721188, 10901485, 12458840, 17442376, 21802970, 43605940, 87211880]

約数ペア:

[(1, 87211880), (2, 43605940), (4, 21802970), (5, 17442376), (7, 12458840), (8, 10901485), (10, 8721188), (14, 6229420), (20, 4360594), (28, 3114710), (35, 2491768), (40, 2180297), (56, 1557355), (70, 1245884), (140, 622942), (280, 311471), (331, 263480), (662, 131740), (941, 92680), (1324, 65870), (1655, 52696), (1882, 46340), (2317, 37640), (2648, 32935), (3310, 26348), (3764, 23170), (4634, 18820), (4705, 18536), (6587, 13240), (6620, 13174), (7528, 11585), (9268, 9410)]