21906710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{449}}^1$

素因数の和:521

約数の個数: 64

約数和(自身を含む): 48988800

約数和(自身を除く): 27082090

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 41, 70, 82, 85, 119, 170, 205, 238, 287, 410, 449, 574, 595, 697, 898, 1190, 1394, 1435, 2245, 2870, 3143, 3485, 4490, 4879, 6286, 6970, 7633, 9758, 15266, 15715, 18409, 24395, 31430, 36818, 38165, 48790, 53431, 76330, 92045, 106862, 128863, 184090, 257726, 267155, 312953, 534310, 625906, 644315, 1288630, 1564765, 2190671, 3129530, 4381342, 10953355, 21906710]

約数ペア:

[(1, 21906710), (2, 10953355), (5, 4381342), (7, 3129530), (10, 2190671), (14, 1564765), (17, 1288630), (34, 644315), (35, 625906), (41, 534310), (70, 312953), (82, 267155), (85, 257726), (119, 184090), (170, 128863), (205, 106862), (238, 92045), (287, 76330), (410, 53431), (449, 48790), (574, 38165), (595, 36818), (697, 31430), (898, 24395), (1190, 18409), (1394, 15715), (1435, 15266), (2245, 9758), (2870, 7633), (3143, 6970), (3485, 6286), (4490, 4879)]