18916768

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1229}}^1$

素因数の和:1289

約数の個数: 48

約数和(自身を含む): 41224680

約数和(自身を除く): 22307912

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 37, 52, 74, 104, 148, 208, 296, 416, 481, 592, 962, 1184, 1229, 1924, 2458, 3848, 4916, 7696, 9832, 15392, 15977, 19664, 31954, 39328, 45473, 63908, 90946, 127816, 181892, 255632, 363784, 511264, 591149, 727568, 1182298, 1455136, 2364596, 4729192, 9458384, 18916768]

約数ペア:

[(1, 18916768), (2, 9458384), (4, 4729192), (8, 2364596), (13, 1455136), (16, 1182298), (26, 727568), (32, 591149), (37, 511264), (52, 363784), (74, 255632), (104, 181892), (148, 127816), (208, 90946), (296, 63908), (416, 45473), (481, 39328), (592, 31954), (962, 19664), (1184, 15977), (1229, 15392), (1924, 9832), (2458, 7696), (3848, 4916)]