20957888

素因数分解:

$2^6\times 7^2\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:230

約数の個数: 84

約数和(自身を含む): 49862232

約数和(自身を除く): 28904344

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 49, 56, 64, 82, 98, 112, 163, 164, 196, 224, 287, 326, 328, 392, 448, 574, 652, 656, 784, 1141, 1148, 1304, 1312, 1568, 2009, 2282, 2296, 2608, 2624, 3136, 4018, 4564, 4592, 5216, 6683, 7987, 8036, 9128, 9184, 10432, 13366, 15974, 16072, 18256, 18368, 26732, 31948, 32144, 36512, 46781, 53464, 63896, 64288, 73024, 93562, 106928, 127792, 128576, 187124, 213856, 255584, 327467, 374248, 427712, 511168, 654934, 748496, 1309868, 1496992, 2619736, 2993984, 5239472, 10478944, 20957888]

約数ペア:

[(1, 20957888), (2, 10478944), (4, 5239472), (7, 2993984), (8, 2619736), (14, 1496992), (16, 1309868), (28, 748496), (32, 654934), (41, 511168), (49, 427712), (56, 374248), (64, 327467), (82, 255584), (98, 213856), (112, 187124), (163, 128576), (164, 127792), (196, 106928), (224, 93562), (287, 73024), (326, 64288), (328, 63896), (392, 53464), (448, 46781), (574, 36512), (652, 32144), (656, 31948), (784, 26732), (1141, 18368), (1148, 18256), (1304, 16072), (1312, 15974), (1568, 13366), (2009, 10432), (2282, 9184), (2296, 9128), (2608, 8036), (2624, 7987), (3136, 6683), (4018, 5216), (4564, 4592)]