15973640

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:342

約数の個数: 64

約数和(自身を含む): 37920960

約数和(自身を除く): 21947320

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 43, 74, 86, 148, 172, 185, 215, 251, 296, 344, 370, 430, 502, 740, 860, 1004, 1255, 1480, 1591, 1720, 2008, 2510, 3182, 5020, 6364, 7955, 9287, 10040, 10793, 12728, 15910, 18574, 21586, 31820, 37148, 43172, 46435, 53965, 63640, 74296, 86344, 92870, 107930, 185740, 215860, 371480, 399341, 431720, 798682, 1597364, 1996705, 3194728, 3993410, 7986820, 15973640]

約数ペア:

[(1, 15973640), (2, 7986820), (4, 3993410), (5, 3194728), (8, 1996705), (10, 1597364), (20, 798682), (37, 431720), (40, 399341), (43, 371480), (74, 215860), (86, 185740), (148, 107930), (172, 92870), (185, 86344), (215, 74296), (251, 63640), (296, 53965), (344, 46435), (370, 43172), (430, 37148), (502, 31820), (740, 21586), (860, 18574), (1004, 15910), (1255, 12728), (1480, 10793), (1591, 10040), (1720, 9287), (2008, 7955), (2510, 6364), (3182, 5020)]