20781570

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{59}}^2\times {\mathrm{199}}^1$

素因数の和:327

約数の個数: 48

約数和(自身を含む): 50990400

約数和(自身を除く): 30208830

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 59, 118, 177, 199, 295, 354, 398, 590, 597, 885, 995, 1194, 1770, 1990, 2985, 3481, 5970, 6962, 10443, 11741, 17405, 20886, 23482, 34810, 35223, 52215, 58705, 70446, 104430, 117410, 176115, 352230, 692719, 1385438, 2078157, 3463595, 4156314, 6927190, 10390785, 20781570]

約数ペア:

[(1, 20781570), (2, 10390785), (3, 6927190), (5, 4156314), (6, 3463595), (10, 2078157), (15, 1385438), (30, 692719), (59, 352230), (118, 176115), (177, 117410), (199, 104430), (295, 70446), (354, 58705), (398, 52215), (590, 35223), (597, 34810), (885, 23482), (995, 20886), (1194, 17405), (1770, 11741), (1990, 10443), (2985, 6962), (3481, 5970)]