16721540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{263}}^1$

素因数の和:317

約数の個数: 72

約数和(自身を含む): 40848192

約数和(自身を除く): 24126652

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 263, 289, 340, 374, 526, 578, 748, 935, 1052, 1156, 1315, 1445, 1870, 2630, 2890, 2893, 3179, 3740, 4471, 5260, 5780, 5786, 6358, 8942, 11572, 12716, 14465, 15895, 17884, 22355, 28930, 31790, 44710, 49181, 57860, 63580, 76007, 89420, 98362, 152014, 196724, 245905, 304028, 380035, 491810, 760070, 836077, 983620, 1520140, 1672154, 3344308, 4180385, 8360770, 16721540]

約数ペア:

[(1, 16721540), (2, 8360770), (4, 4180385), (5, 3344308), (10, 1672154), (11, 1520140), (17, 983620), (20, 836077), (22, 760070), (34, 491810), (44, 380035), (55, 304028), (68, 245905), (85, 196724), (110, 152014), (170, 98362), (187, 89420), (220, 76007), (263, 63580), (289, 57860), (340, 49181), (374, 44710), (526, 31790), (578, 28930), (748, 22355), (935, 17884), (1052, 15895), (1156, 14465), (1315, 12716), (1445, 11572), (1870, 8942), (2630, 6358), (2890, 5786), (2893, 5780), (3179, 5260), (3740, 4471)]