19385840

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3413}}^1$

素因数の和:3497

約数の個数: 40

約数和(自身を含む): 45720288

約数和(自身を除く): 26334448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3413, 5680, 6826, 13652, 17065, 27304, 34130, 54608, 68260, 136520, 242323, 273040, 484646, 969292, 1211615, 1938584, 2423230, 3877168, 4846460, 9692920, 19385840]

約数ペア:

[(1, 19385840), (2, 9692920), (4, 4846460), (5, 3877168), (8, 2423230), (10, 1938584), (16, 1211615), (20, 969292), (40, 484646), (71, 273040), (80, 242323), (142, 136520), (284, 68260), (355, 54608), (568, 34130), (710, 27304), (1136, 17065), (1420, 13652), (2840, 6826), (3413, 5680)]