19902560

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2347}}^1$

素因数の和:2415

約数の個数: 48

約数和(自身を含む): 47927376

約数和(自身を除く): 28024816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2347, 4240, 4694, 8480, 9388, 11735, 18776, 23470, 37552, 46940, 75104, 93880, 124391, 187760, 248782, 375520, 497564, 621955, 995128, 1243910, 1990256, 2487820, 3980512, 4975640, 9951280, 19902560]

約数ペア:

[(1, 19902560), (2, 9951280), (4, 4975640), (5, 3980512), (8, 2487820), (10, 1990256), (16, 1243910), (20, 995128), (32, 621955), (40, 497564), (53, 375520), (80, 248782), (106, 187760), (160, 124391), (212, 93880), (265, 75104), (424, 46940), (530, 37552), (848, 23470), (1060, 18776), (1696, 11735), (2120, 9388), (2347, 8480), (4240, 4694)]