15632780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 33929280

約数和(自身を除く): 18296500

約数列:

[1, 2, 4, 5, 10, 20, 71, 101, 109, 142, 202, 218, 284, 355, 404, 436, 505, 545, 710, 1010, 1090, 1420, 2020, 2180, 7171, 7739, 11009, 14342, 15478, 22018, 28684, 30956, 35855, 38695, 44036, 55045, 71710, 77390, 110090, 143420, 154780, 220180, 781639, 1563278, 3126556, 3908195, 7816390, 15632780]

約数ペア:

[(1, 15632780), (2, 7816390), (4, 3908195), (5, 3126556), (10, 1563278), (20, 781639), (71, 220180), (101, 154780), (109, 143420), (142, 110090), (202, 77390), (218, 71710), (284, 55045), (355, 44036), (404, 38695), (436, 35855), (505, 30956), (545, 28684), (710, 22018), (1010, 15478), (1090, 14342), (1420, 11009), (2020, 7739), (2180, 7171)]