20040378484

素因数分解:

$2^2\times 7^2\times {\mathrm{239}}^1\times {\mathrm{383}}^1\times {\mathrm{1117}}^1$

素因数の和:1757

約数の個数: 72

約数和(自身を含む): 41110917120

約数和(自身を除く): 21070538636

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 239, 383, 478, 766, 956, 1117, 1532, 1673, 2234, 2681, 3346, 4468, 5362, 6692, 7819, 10724, 11711, 15638, 18767, 23422, 31276, 37534, 46844, 54733, 75068, 91537, 109466, 183074, 218932, 266963, 366148, 427811, 533926, 640759, 855622, 1067852, 1281518, 1711244, 1868741, 2563036, 2994677, 3737482, 4485313, 5989354, 7474964, 8970626, 11978708, 13081187, 17941252, 20962739, 26162374, 41925478, 52324748, 83850956, 102246829, 204493658, 408987316, 715727803, 1431455606, 2862911212, 5010094621, 10020189242, 20040378484]

約数ペア:

[(1, 20040378484), (2, 10020189242), (4, 5010094621), (7, 2862911212), (14, 1431455606), (28, 715727803), (49, 408987316), (98, 204493658), (196, 102246829), (239, 83850956), (383, 52324748), (478, 41925478), (766, 26162374), (956, 20962739), (1117, 17941252), (1532, 13081187), (1673, 11978708), (2234, 8970626), (2681, 7474964), (3346, 5989354), (4468, 4485313), (5362, 3737482), (6692, 2994677), (7819, 2563036), (10724, 1868741), (11711, 1711244), (15638, 1281518), (18767, 1067852), (23422, 855622), (31276, 640759), (37534, 533926), (46844, 427811), (54733, 366148), (75068, 266963), (91537, 218932), (109466, 183074)]