20858528

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{223}}^1$

素因数の和:349

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 22041952

約数列:

[1, 2, 4, 8, 16, 32, 37, 74, 79, 148, 158, 223, 296, 316, 446, 592, 632, 892, 1184, 1264, 1784, 2528, 2923, 3568, 5846, 7136, 8251, 11692, 16502, 17617, 23384, 33004, 35234, 46768, 66008, 70468, 93536, 132016, 140936, 264032, 281872, 563744, 651829, 1303658, 2607316, 5214632, 10429264, 20858528]

約数ペア:

[(1, 20858528), (2, 10429264), (4, 5214632), (8, 2607316), (16, 1303658), (32, 651829), (37, 563744), (74, 281872), (79, 264032), (148, 140936), (158, 132016), (223, 93536), (296, 70468), (316, 66008), (446, 46768), (592, 35234), (632, 33004), (892, 23384), (1184, 17617), (1264, 16502), (1784, 11692), (2528, 8251), (2923, 7136), (3568, 5846)]