128721720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{787}}^1$

素因数の和:877

約数の個数: 128

約数和(自身を含む): 408499200

約数和(自身を除く): 279777480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 47, 58, 60, 87, 94, 116, 120, 141, 145, 174, 188, 232, 235, 282, 290, 348, 376, 435, 470, 564, 580, 696, 705, 787, 870, 940, 1128, 1160, 1363, 1410, 1574, 1740, 1880, 2361, 2726, 2820, 3148, 3480, 3935, 4089, 4722, 5452, 5640, 6296, 6815, 7870, 8178, 9444, 10904, 11805, 13630, 15740, 16356, 18888, 20445, 22823, 23610, 27260, 31480, 32712, 36989, 40890, 45646, 47220, 54520, 68469, 73978, 81780, 91292, 94440, 110967, 114115, 136938, 147956, 163560, 182584, 184945, 221934, 228230, 273876, 295912, 342345, 369890, 443868, 456460, 547752, 554835, 684690, 739780, 887736, 912920, 1072681, 1109670, 1369380, 1479560, 2145362, 2219340, 2738760, 3218043, 4290724, 4438680, 5363405, 6436086, 8581448, 10726810, 12872172, 16090215, 21453620, 25744344, 32180430, 42907240, 64360860, 128721720]

約数ペア:

[(1, 128721720), (2, 64360860), (3, 42907240), (4, 32180430), (5, 25744344), (6, 21453620), (8, 16090215), (10, 12872172), (12, 10726810), (15, 8581448), (20, 6436086), (24, 5363405), (29, 4438680), (30, 4290724), (40, 3218043), (47, 2738760), (58, 2219340), (60, 2145362), (87, 1479560), (94, 1369380), (116, 1109670), (120, 1072681), (141, 912920), (145, 887736), (174, 739780), (188, 684690), (232, 554835), (235, 547752), (282, 456460), (290, 443868), (348, 369890), (376, 342345), (435, 295912), (470, 273876), (564, 228230), (580, 221934), (696, 184945), (705, 182584), (787, 163560), (870, 147956), (940, 136938), (1128, 114115), (1160, 110967), (1363, 94440), (1410, 91292), (1574, 81780), (1740, 73978), (1880, 68469), (2361, 54520), (2726, 47220), (2820, 45646), (3148, 40890), (3480, 36989), (3935, 32712), (4089, 31480), (4722, 27260), (5452, 23610), (5640, 22823), (6296, 20445), (6815, 18888), (7870, 16356), (8178, 15740), (9444, 13630), (10904, 11805)]