19900744

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:190

約数の個数: 64

約数和(自身を含む): 41912640

約数和(自身を除く): 22011896

約数列:

[1, 2, 4, 8, 17, 34, 41, 43, 68, 82, 83, 86, 136, 164, 166, 172, 328, 332, 344, 664, 697, 731, 1394, 1411, 1462, 1763, 2788, 2822, 2924, 3403, 3526, 3569, 5576, 5644, 5848, 6806, 7052, 7138, 11288, 13612, 14104, 14276, 27224, 28552, 29971, 57851, 59942, 60673, 115702, 119884, 121346, 146329, 231404, 239768, 242692, 292658, 462808, 485384, 585316, 1170632, 2487593, 4975186, 9950372, 19900744]

約数ペア:

[(1, 19900744), (2, 9950372), (4, 4975186), (8, 2487593), (17, 1170632), (34, 585316), (41, 485384), (43, 462808), (68, 292658), (82, 242692), (83, 239768), (86, 231404), (136, 146329), (164, 121346), (166, 119884), (172, 115702), (328, 60673), (332, 59942), (344, 57851), (664, 29971), (697, 28552), (731, 27224), (1394, 14276), (1411, 14104), (1462, 13612), (1763, 11288), (2788, 7138), (2822, 7052), (2924, 6806), (3403, 5848), (3526, 5644), (3569, 5576)]