21519946

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1\times {\mathrm{223}}^1$

素因数の和:406

約数の個数: 32

約数和(自身を含む): 37997568

約数和(自身を除く): 16477622

約数列:

[1, 2, 7, 14, 61, 113, 122, 223, 226, 427, 446, 791, 854, 1561, 1582, 3122, 6893, 13603, 13786, 25199, 27206, 48251, 50398, 95221, 96502, 176393, 190442, 352786, 1537139, 3074278, 10759973, 21519946]

約数ペア:

[(1, 21519946), (2, 10759973), (7, 3074278), (14, 1537139), (61, 352786), (113, 190442), (122, 176393), (223, 96502), (226, 95221), (427, 50398), (446, 48251), (791, 27206), (854, 25199), (1561, 13786), (1582, 13603), (3122, 6893)]