28225820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5449}}^1$

素因数の和:5502

約数の個数: 48

約数和(自身を含む): 69585600

約数和(自身を除く): 41359780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 5180, 5449, 10898, 21796, 27245, 38143, 54490, 76286, 108980, 152572, 190715, 201613, 381430, 403226, 762860, 806452, 1008065, 1411291, 2016130, 2822582, 4032260, 5645164, 7056455, 14112910, 28225820]

約数ペア:

[(1, 28225820), (2, 14112910), (4, 7056455), (5, 5645164), (7, 4032260), (10, 2822582), (14, 2016130), (20, 1411291), (28, 1008065), (35, 806452), (37, 762860), (70, 403226), (74, 381430), (140, 201613), (148, 190715), (185, 152572), (259, 108980), (370, 76286), (518, 54490), (740, 38143), (1036, 27245), (1295, 21796), (2590, 10898), (5180, 5449)]