20897779560

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{1423}}^1\times {\mathrm{17483}}^1$

素因数の和:18927

約数の個数: 128

約数和(自身を含む): 71703982080

約数和(自身を除く): 50806202520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 1423, 2846, 4269, 5692, 7115, 8538, 9961, 11384, 14230, 17076, 17483, 19922, 21345, 28460, 29883, 34152, 34966, 39844, 42690, 49805, 52449, 56920, 59766, 69932, 79688, 85380, 87415, 99610, 104898, 119532, 122381, 139864, 149415, 170760, 174830, 199220, 209796, 239064, 244762, 262245, 298830, 349660, 367143, 398440, 419592, 489524, 524490, 597660, 611905, 699320, 734286, 979048, 1048980, 1195320, 1223810, 1468572, 1835715, 2097960, 2447620, 2937144, 3671430, 4895240, 7342860, 14685720, 24878309, 49756618, 74634927, 99513236, 124391545, 149269854, 174148163, 199026472, 248783090, 298539708, 348296326, 373174635, 497566180, 522444489, 597079416, 696592652, 746349270, 870740815, 995132360, 1044888978, 1393185304, 1492698540, 1741481630, 2089777956, 2612222445, 2985397080, 3482963260, 4179555912, 5224444890, 6965926520, 10448889780, 20897779560]

約数ペア:

[(1, 20897779560), (2, 10448889780), (3, 6965926520), (4, 5224444890), (5, 4179555912), (6, 3482963260), (7, 2985397080), (8, 2612222445), (10, 2089777956), (12, 1741481630), (14, 1492698540), (15, 1393185304), (20, 1044888978), (21, 995132360), (24, 870740815), (28, 746349270), (30, 696592652), (35, 597079416), (40, 522444489), (42, 497566180), (56, 373174635), (60, 348296326), (70, 298539708), (84, 248783090), (105, 199026472), (120, 174148163), (140, 149269854), (168, 124391545), (210, 99513236), (280, 74634927), (420, 49756618), (840, 24878309), (1423, 14685720), (2846, 7342860), (4269, 4895240), (5692, 3671430), (7115, 2937144), (8538, 2447620), (9961, 2097960), (11384, 1835715), (14230, 1468572), (17076, 1223810), (17483, 1195320), (19922, 1048980), (21345, 979048), (28460, 734286), (29883, 699320), (34152, 611905), (34966, 597660), (39844, 524490), (42690, 489524), (49805, 419592), (52449, 398440), (56920, 367143), (59766, 349660), (69932, 298830), (79688, 262245), (85380, 244762), (87415, 239064), (99610, 209796), (104898, 199220), (119532, 174830), (122381, 170760), (139864, 149415)]