19897884

素因数分解:

$2^2\times 3^2\times {\mathrm{449}}^1\times {\mathrm{1231}}^1$

素因数の和:1690

約数の個数: 36

約数和(自身を含む): 50450400

約数和(自身を除く): 30552516

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 449, 898, 1231, 1347, 1796, 2462, 2694, 3693, 4041, 4924, 5388, 7386, 8082, 11079, 14772, 16164, 22158, 44316, 552719, 1105438, 1658157, 2210876, 3316314, 4974471, 6632628, 9948942, 19897884]

約数ペア:

[(1, 19897884), (2, 9948942), (3, 6632628), (4, 4974471), (6, 3316314), (9, 2210876), (12, 1658157), (18, 1105438), (36, 552719), (449, 44316), (898, 22158), (1231, 16164), (1347, 14772), (1796, 11079), (2462, 8082), (2694, 7386), (3693, 5388), (4041, 4924)]