19688440

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{251}}^1$

素因数の和:352

約数の個数: 64

約数和(自身を含む): 46539360

約数和(自身を除く): 26850920

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 53, 74, 106, 148, 185, 212, 251, 265, 296, 370, 424, 502, 530, 740, 1004, 1060, 1255, 1480, 1961, 2008, 2120, 2510, 3922, 5020, 7844, 9287, 9805, 10040, 13303, 15688, 18574, 19610, 26606, 37148, 39220, 46435, 53212, 66515, 74296, 78440, 92870, 106424, 133030, 185740, 266060, 371480, 492211, 532120, 984422, 1968844, 2461055, 3937688, 4922110, 9844220, 19688440]

約数ペア:

[(1, 19688440), (2, 9844220), (4, 4922110), (5, 3937688), (8, 2461055), (10, 1968844), (20, 984422), (37, 532120), (40, 492211), (53, 371480), (74, 266060), (106, 185740), (148, 133030), (185, 106424), (212, 92870), (251, 78440), (265, 74296), (296, 66515), (370, 53212), (424, 46435), (502, 39220), (530, 37148), (740, 26606), (1004, 19610), (1060, 18574), (1255, 15688), (1480, 13303), (1961, 10040), (2008, 9805), (2120, 9287), (2510, 7844), (3922, 5020)]