201990131456

素因数分解:

$2^8\times {\mathrm{193}}^1\times {\mathrm{1087}}^1\times {\mathrm{3761}}^1$

素因数の和:5057

約数の個数: 72

約数和(自身を含む): 405761013504

約数和(自身を除く): 203770882048

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 193, 256, 386, 772, 1087, 1544, 2174, 3088, 3761, 4348, 6176, 7522, 8696, 12352, 15044, 17392, 24704, 30088, 34784, 49408, 60176, 69568, 120352, 139136, 209791, 240704, 278272, 419582, 481408, 725873, 839164, 962816, 1451746, 1678328, 2903492, 3356656, 4088207, 5806984, 6713312, 8176414, 11613968, 13426624, 16352828, 23227936, 26853248, 32705656, 46455872, 53706496, 65411312, 92911744, 130822624, 185823488, 261645248, 523290496, 789023951, 1046580992, 1578047902, 3156095804, 6312191608, 12624383216, 25248766432, 50497532864, 100995065728, 201990131456]

約数ペア:

[(1, 201990131456), (2, 100995065728), (4, 50497532864), (8, 25248766432), (16, 12624383216), (32, 6312191608), (64, 3156095804), (128, 1578047902), (193, 1046580992), (256, 789023951), (386, 523290496), (772, 261645248), (1087, 185823488), (1544, 130822624), (2174, 92911744), (3088, 65411312), (3761, 53706496), (4348, 46455872), (6176, 32705656), (7522, 26853248), (8696, 23227936), (12352, 16352828), (15044, 13426624), (17392, 11613968), (24704, 8176414), (30088, 6713312), (34784, 5806984), (49408, 4088207), (60176, 3356656), (69568, 2903492), (120352, 1678328), (139136, 1451746), (209791, 962816), (240704, 839164), (278272, 725873), (419582, 481408)]