21372976

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{457}}^1$

素因数の和:581

約数の個数: 40

約数和(自身を含む): 43161920

約数和(自身を除く): 21788944

約数列:

[1, 2, 4, 8, 16, 37, 74, 79, 148, 158, 296, 316, 457, 592, 632, 914, 1264, 1828, 2923, 3656, 5846, 7312, 11692, 16909, 23384, 33818, 36103, 46768, 67636, 72206, 135272, 144412, 270544, 288824, 577648, 1335811, 2671622, 5343244, 10686488, 21372976]

約数ペア:

[(1, 21372976), (2, 10686488), (4, 5343244), (8, 2671622), (16, 1335811), (37, 577648), (74, 288824), (79, 270544), (148, 144412), (158, 135272), (296, 72206), (316, 67636), (457, 46768), (592, 36103), (632, 33818), (914, 23384), (1264, 16909), (1828, 11692), (2923, 7312), (3656, 5846)]