28541720

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{2633}}^1$

素因数の和:2915

約数の個数: 32

約数和(自身を含む): 64480320

約数和(自身を除く): 35938600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 2168, 2633, 2710, 5266, 5420, 10532, 10840, 13165, 21064, 26330, 52660, 105320, 713543, 1427086, 2854172, 3567715, 5708344, 7135430, 14270860, 28541720]

約数ペア:

[(1, 28541720), (2, 14270860), (4, 7135430), (5, 5708344), (8, 3567715), (10, 2854172), (20, 1427086), (40, 713543), (271, 105320), (542, 52660), (1084, 26330), (1355, 21064), (2168, 13165), (2633, 10840), (2710, 10532), (5266, 5420)]