21667065

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{719}}^1$

素因数の和:782

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 19701255

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 49, 105, 123, 147, 205, 245, 287, 615, 719, 735, 861, 1435, 2009, 2157, 3595, 4305, 5033, 6027, 10045, 10785, 15099, 25165, 29479, 30135, 35231, 75495, 88437, 105693, 147395, 176155, 206353, 442185, 528465, 619059, 1031765, 1444471, 3095295, 4333413, 7222355, 21667065]

約数ペア:

[(1, 21667065), (3, 7222355), (5, 4333413), (7, 3095295), (15, 1444471), (21, 1031765), (35, 619059), (41, 528465), (49, 442185), (105, 206353), (123, 176155), (147, 147395), (205, 105693), (245, 88437), (287, 75495), (615, 35231), (719, 30135), (735, 29479), (861, 25165), (1435, 15099), (2009, 10785), (2157, 10045), (3595, 6027), (4305, 5033)]