28988020

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{911}}^1$

素因数の和:1000

約数の個数: 48

約数和(自身を含む): 64044288

約数和(自身を除く): 35056268

約数列:

[1, 2, 4, 5, 10, 20, 37, 43, 74, 86, 148, 172, 185, 215, 370, 430, 740, 860, 911, 1591, 1822, 3182, 3644, 4555, 6364, 7955, 9110, 15910, 18220, 31820, 33707, 39173, 67414, 78346, 134828, 156692, 168535, 195865, 337070, 391730, 674140, 783460, 1449401, 2898802, 5797604, 7247005, 14494010, 28988020]

約数ペア:

[(1, 28988020), (2, 14494010), (4, 7247005), (5, 5797604), (10, 2898802), (20, 1449401), (37, 783460), (43, 674140), (74, 391730), (86, 337070), (148, 195865), (172, 168535), (185, 156692), (215, 134828), (370, 78346), (430, 67414), (740, 39173), (860, 33707), (911, 31820), (1591, 18220), (1822, 15910), (3182, 9110), (3644, 7955), (4555, 6364)]