19906566544

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{781999}}^1$

素因数の和:782087

約数の個数: 40

約数和(自身を含む): 40532624000

約数和(自身を除く): 20626057456

約数列:

[1, 2, 4, 8, 16, 37, 43, 74, 86, 148, 172, 296, 344, 592, 688, 1591, 3182, 6364, 12728, 25456, 781999, 1563998, 3127996, 6255992, 12511984, 28933963, 33625957, 57867926, 67251914, 115735852, 134503828, 231471704, 269007656, 462943408, 538015312, 1244160409, 2488320818, 4976641636, 9953283272, 19906566544]

約数ペア:

[(1, 19906566544), (2, 9953283272), (4, 4976641636), (8, 2488320818), (16, 1244160409), (37, 538015312), (43, 462943408), (74, 269007656), (86, 231471704), (148, 134503828), (172, 115735852), (296, 67251914), (344, 57867926), (592, 33625957), (688, 28933963), (1591, 12511984), (3182, 6255992), (6364, 3127996), (12728, 1563998), (25456, 781999)]