19904560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19139}}^1$

素因数の和:19165

約数の個数: 40

約数和(自身を含む): 49840560

約数和(自身を除く): 29936000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19139, 38278, 76556, 95695, 153112, 191390, 248807, 306224, 382780, 497614, 765560, 995228, 1244035, 1531120, 1990456, 2488070, 3980912, 4976140, 9952280, 19904560]

約数ペア:

[(1, 19904560), (2, 9952280), (4, 4976140), (5, 3980912), (8, 2488070), (10, 1990456), (13, 1531120), (16, 1244035), (20, 995228), (26, 765560), (40, 497614), (52, 382780), (65, 306224), (80, 248807), (104, 191390), (130, 153112), (208, 95695), (260, 76556), (520, 38278), (1040, 19139)]