20417040

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4051}}^1$

素因数の和:4077

約数の個数: 120

約数和(自身を含む): 78381888

約数和(自身を除く): 57964848

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 4051, 5040, 8102, 12153, 16204, 20255, 24306, 28357, 32408, 36459, 40510, 48612, 56714, 60765, 64816, 72918, 81020, 85071, 97224, 113428, 121530, 141785, 145836, 162040, 170142, 182295, 194448, 226856, 243060, 255213, 283570, 291672, 324080, 340284, 364590, 425355, 453712, 486120, 510426, 567140, 583344, 680568, 729180, 850710, 972240, 1020852, 1134280, 1276065, 1361136, 1458360, 1701420, 2041704, 2268560, 2552130, 2916720, 3402840, 4083408, 5104260, 6805680, 10208520, 20417040]

約数ペア:

[(1, 20417040), (2, 10208520), (3, 6805680), (4, 5104260), (5, 4083408), (6, 3402840), (7, 2916720), (8, 2552130), (9, 2268560), (10, 2041704), (12, 1701420), (14, 1458360), (15, 1361136), (16, 1276065), (18, 1134280), (20, 1020852), (21, 972240), (24, 850710), (28, 729180), (30, 680568), (35, 583344), (36, 567140), (40, 510426), (42, 486120), (45, 453712), (48, 425355), (56, 364590), (60, 340284), (63, 324080), (70, 291672), (72, 283570), (80, 255213), (84, 243060), (90, 226856), (105, 194448), (112, 182295), (120, 170142), (126, 162040), (140, 145836), (144, 141785), (168, 121530), (180, 113428), (210, 97224), (240, 85071), (252, 81020), (280, 72918), (315, 64816), (336, 60765), (360, 56714), (420, 48612), (504, 40510), (560, 36459), (630, 32408), (720, 28357), (840, 24306), (1008, 20255), (1260, 16204), (1680, 12153), (2520, 8102), (4051, 5040)]