19627432820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{641}}^1\times {\mathrm{4241}}^1$

素因数の和:4929

約数の個数: 72

約数和(自身を含む): 43579270728

約数和(自身を除く): 23951837908

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 641, 722, 1282, 1444, 1805, 2564, 3205, 3610, 4241, 6410, 7220, 8482, 12179, 12820, 16964, 21205, 24358, 42410, 48716, 60895, 80579, 84820, 121790, 161158, 231401, 243580, 322316, 402895, 462802, 805790, 925604, 1157005, 1531001, 1611580, 2314010, 2718481, 3062002, 4628020, 5436962, 6124004, 7655005, 10873924, 13592405, 15310010, 27184810, 30620020, 51651139, 54369620, 103302278, 206604556, 258255695, 516511390, 981371641, 1033022780, 1962743282, 3925486564, 4906858205, 9813716410, 19627432820]

約数ペア:

[(1, 19627432820), (2, 9813716410), (4, 4906858205), (5, 3925486564), (10, 1962743282), (19, 1033022780), (20, 981371641), (38, 516511390), (76, 258255695), (95, 206604556), (190, 103302278), (361, 54369620), (380, 51651139), (641, 30620020), (722, 27184810), (1282, 15310010), (1444, 13592405), (1805, 10873924), (2564, 7655005), (3205, 6124004), (3610, 5436962), (4241, 4628020), (6410, 3062002), (7220, 2718481), (8482, 2314010), (12179, 1611580), (12820, 1531001), (16964, 1157005), (21205, 925604), (24358, 805790), (42410, 462802), (48716, 402895), (60895, 322316), (80579, 243580), (84820, 231401), (121790, 161158)]