20995072

素因数分解:

$2^{10}\times 7^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:157

約数の個数: 88

約数和(自身を含む): 50110560

約数和(自身を除く): 29115488

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 56, 58, 64, 101, 112, 116, 128, 202, 203, 224, 232, 256, 404, 406, 448, 464, 512, 707, 808, 812, 896, 928, 1024, 1414, 1616, 1624, 1792, 1856, 2828, 2929, 3232, 3248, 3584, 3712, 5656, 5858, 6464, 6496, 7168, 7424, 11312, 11716, 12928, 12992, 14848, 20503, 22624, 23432, 25856, 25984, 29696, 41006, 45248, 46864, 51712, 51968, 82012, 90496, 93728, 103424, 103936, 164024, 180992, 187456, 207872, 328048, 361984, 374912, 656096, 723968, 749824, 1312192, 1499648, 2624384, 2999296, 5248768, 10497536, 20995072]

約数ペア:

[(1, 20995072), (2, 10497536), (4, 5248768), (7, 2999296), (8, 2624384), (14, 1499648), (16, 1312192), (28, 749824), (29, 723968), (32, 656096), (56, 374912), (58, 361984), (64, 328048), (101, 207872), (112, 187456), (116, 180992), (128, 164024), (202, 103936), (203, 103424), (224, 93728), (232, 90496), (256, 82012), (404, 51968), (406, 51712), (448, 46864), (464, 45248), (512, 41006), (707, 29696), (808, 25984), (812, 25856), (896, 23432), (928, 22624), (1024, 20503), (1414, 14848), (1616, 12992), (1624, 12928), (1792, 11716), (1856, 11312), (2828, 7424), (2929, 7168), (3232, 6496), (3248, 6464), (3584, 5858), (3712, 5656)]