21275370

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{6389}}^1$

素因数の和:6439

約数の個数: 48

約数和(自身を含む): 56819880

約数和(自身を除く): 35544510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 37, 45, 74, 90, 111, 185, 222, 333, 370, 555, 666, 1110, 1665, 3330, 6389, 12778, 19167, 31945, 38334, 57501, 63890, 95835, 115002, 191670, 236393, 287505, 472786, 575010, 709179, 1181965, 1418358, 2127537, 2363930, 3545895, 4255074, 7091790, 10637685, 21275370]

約数ペア:

[(1, 21275370), (2, 10637685), (3, 7091790), (5, 4255074), (6, 3545895), (9, 2363930), (10, 2127537), (15, 1418358), (18, 1181965), (30, 709179), (37, 575010), (45, 472786), (74, 287505), (90, 236393), (111, 191670), (185, 115002), (222, 95835), (333, 63890), (370, 57501), (555, 38334), (666, 31945), (1110, 19167), (1665, 12778), (3330, 6389)]