28383440

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:316

約数の個数: 80

約数和(自身を含む): 69662208

約数和(自身を除く): 41278768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 43, 74, 80, 86, 148, 172, 185, 215, 223, 296, 344, 370, 430, 446, 592, 688, 740, 860, 892, 1115, 1480, 1591, 1720, 1784, 2230, 2960, 3182, 3440, 3568, 4460, 6364, 7955, 8251, 8920, 9589, 12728, 15910, 16502, 17840, 19178, 25456, 31820, 33004, 38356, 41255, 47945, 63640, 66008, 76712, 82510, 95890, 127280, 132016, 153424, 165020, 191780, 330040, 354793, 383560, 660080, 709586, 767120, 1419172, 1773965, 2838344, 3547930, 5676688, 7095860, 14191720, 28383440]

約数ペア:

[(1, 28383440), (2, 14191720), (4, 7095860), (5, 5676688), (8, 3547930), (10, 2838344), (16, 1773965), (20, 1419172), (37, 767120), (40, 709586), (43, 660080), (74, 383560), (80, 354793), (86, 330040), (148, 191780), (172, 165020), (185, 153424), (215, 132016), (223, 127280), (296, 95890), (344, 82510), (370, 76712), (430, 66008), (446, 63640), (592, 47945), (688, 41255), (740, 38356), (860, 33004), (892, 31820), (1115, 25456), (1480, 19178), (1591, 17840), (1720, 16502), (1784, 15910), (2230, 12728), (2960, 9589), (3182, 8920), (3440, 8251), (3568, 7955), (4460, 6364)]