28238420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{503}}^1$

素因数の和:920

約数の個数: 48

約数和(自身を含む): 68076288

約数和(自身を除く): 39837868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 401, 503, 802, 1006, 1604, 2005, 2012, 2515, 2807, 3521, 4010, 5030, 5614, 7042, 8020, 10060, 11228, 14035, 14084, 17605, 28070, 35210, 56140, 70420, 201703, 403406, 806812, 1008515, 1411921, 2017030, 2823842, 4034060, 5647684, 7059605, 14119210, 28238420]

約数ペア:

[(1, 28238420), (2, 14119210), (4, 7059605), (5, 5647684), (7, 4034060), (10, 2823842), (14, 2017030), (20, 1411921), (28, 1008515), (35, 806812), (70, 403406), (140, 201703), (401, 70420), (503, 56140), (802, 35210), (1006, 28070), (1604, 17605), (2005, 14084), (2012, 14035), (2515, 11228), (2807, 10060), (3521, 8020), (4010, 7042), (5030, 5614)]