19618020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1493}}^1$

素因数の和:1581

約数の個数: 72

約数和(自身を含む): 60363576

約数和(自身を除く): 40745556

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 73, 90, 146, 180, 219, 292, 365, 438, 657, 730, 876, 1095, 1314, 1460, 1493, 2190, 2628, 2986, 3285, 4380, 4479, 5972, 6570, 7465, 8958, 13140, 13437, 14930, 17916, 22395, 26874, 29860, 44790, 53748, 67185, 89580, 108989, 134370, 217978, 268740, 326967, 435956, 544945, 653934, 980901, 1089890, 1307868, 1634835, 1961802, 2179780, 3269670, 3923604, 4904505, 6539340, 9809010, 19618020]

約数ペア:

[(1, 19618020), (2, 9809010), (3, 6539340), (4, 4904505), (5, 3923604), (6, 3269670), (9, 2179780), (10, 1961802), (12, 1634835), (15, 1307868), (18, 1089890), (20, 980901), (30, 653934), (36, 544945), (45, 435956), (60, 326967), (73, 268740), (90, 217978), (146, 134370), (180, 108989), (219, 89580), (292, 67185), (365, 53748), (438, 44790), (657, 29860), (730, 26874), (876, 22395), (1095, 17916), (1314, 14930), (1460, 13437), (1493, 13140), (2190, 8958), (2628, 7465), (2986, 6570), (3285, 5972), (4380, 4479)]