19802380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76163}}^1$

素因数の和:76185

約数の個数: 24

約数和(自身を含む): 44784432

約数和(自身を除く): 24982052

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76163, 152326, 304652, 380815, 761630, 990119, 1523260, 1980238, 3960476, 4950595, 9901190, 19802380]

約数ペア:

[(1, 19802380), (2, 9901190), (4, 4950595), (5, 3960476), (10, 1980238), (13, 1523260), (20, 990119), (26, 761630), (52, 380815), (65, 304652), (130, 152326), (260, 76163)]