19689328

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:545

約数の個数: 40

約数和(自身を含む): 39769280

約数和(自身を除く): 20079952

約数列:

[1, 2, 4, 8, 16, 37, 74, 79, 148, 158, 296, 316, 421, 592, 632, 842, 1264, 1684, 2923, 3368, 5846, 6736, 11692, 15577, 23384, 31154, 33259, 46768, 62308, 66518, 124616, 133036, 249232, 266072, 532144, 1230583, 2461166, 4922332, 9844664, 19689328]

約数ペア:

[(1, 19689328), (2, 9844664), (4, 4922332), (8, 2461166), (16, 1230583), (37, 532144), (74, 266072), (79, 249232), (148, 133036), (158, 124616), (296, 66518), (316, 62308), (421, 46768), (592, 33259), (632, 31154), (842, 23384), (1264, 15577), (1684, 11692), (2923, 6736), (3368, 5846)]