19449040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18701}}^1$

素因数の和:18727

約数の個数: 40

約数和(自身を含む): 48700008

約数和(自身を除く): 29250968

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 18701, 37402, 74804, 93505, 149608, 187010, 243113, 299216, 374020, 486226, 748040, 972452, 1215565, 1496080, 1944904, 2431130, 3889808, 4862260, 9724520, 19449040]

約数ペア:

[(1, 19449040), (2, 9724520), (4, 4862260), (5, 3889808), (8, 2431130), (10, 1944904), (13, 1496080), (16, 1215565), (20, 972452), (26, 748040), (40, 486226), (52, 374020), (65, 299216), (80, 243113), (104, 187010), (130, 149608), (208, 93505), (260, 74804), (520, 37402), (1040, 18701)]