87999940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{15331}}^1$

素因数の和:15388

約数の個数: 48

約数和(自身を含む): 216365184

約数和(自身を除く): 128365244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 5740, 15331, 30662, 61324, 76655, 107317, 153310, 214634, 306620, 429268, 536585, 628571, 1073170, 1257142, 2146340, 2514284, 3142855, 4399997, 6285710, 8799994, 12571420, 17599988, 21999985, 43999970, 87999940]

約数ペア:

[(1, 87999940), (2, 43999970), (4, 21999985), (5, 17599988), (7, 12571420), (10, 8799994), (14, 6285710), (20, 4399997), (28, 3142855), (35, 2514284), (41, 2146340), (70, 1257142), (82, 1073170), (140, 628571), (164, 536585), (205, 429268), (287, 306620), (410, 214634), (574, 153310), (820, 107317), (1148, 76655), (1435, 61324), (2870, 30662), (5740, 15331)]