20864760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{421}}^1$

素因数の和:501

約数の個数: 128

約数和(自身を含む): 72921600

約数和(自身を除く): 52056840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 59, 60, 70, 84, 105, 118, 120, 140, 168, 177, 210, 236, 280, 295, 354, 413, 420, 421, 472, 590, 708, 826, 840, 842, 885, 1180, 1239, 1263, 1416, 1652, 1684, 1770, 2065, 2105, 2360, 2478, 2526, 2947, 3304, 3368, 3540, 4130, 4210, 4956, 5052, 5894, 6195, 6315, 7080, 8260, 8420, 8841, 9912, 10104, 11788, 12390, 12630, 14735, 16520, 16840, 17682, 23576, 24780, 24839, 25260, 29470, 35364, 44205, 49560, 49678, 50520, 58940, 70728, 74517, 88410, 99356, 117880, 124195, 149034, 173873, 176820, 198712, 248390, 298068, 347746, 353640, 372585, 496780, 521619, 596136, 695492, 745170, 869365, 993560, 1043238, 1390984, 1490340, 1738730, 2086476, 2608095, 2980680, 3477460, 4172952, 5216190, 6954920, 10432380, 20864760]

約数ペア:

[(1, 20864760), (2, 10432380), (3, 6954920), (4, 5216190), (5, 4172952), (6, 3477460), (7, 2980680), (8, 2608095), (10, 2086476), (12, 1738730), (14, 1490340), (15, 1390984), (20, 1043238), (21, 993560), (24, 869365), (28, 745170), (30, 695492), (35, 596136), (40, 521619), (42, 496780), (56, 372585), (59, 353640), (60, 347746), (70, 298068), (84, 248390), (105, 198712), (118, 176820), (120, 173873), (140, 149034), (168, 124195), (177, 117880), (210, 99356), (236, 88410), (280, 74517), (295, 70728), (354, 58940), (413, 50520), (420, 49678), (421, 49560), (472, 44205), (590, 35364), (708, 29470), (826, 25260), (840, 24839), (842, 24780), (885, 23576), (1180, 17682), (1239, 16840), (1263, 16520), (1416, 14735), (1652, 12630), (1684, 12390), (1770, 11788), (2065, 10104), (2105, 9912), (2360, 8841), (2478, 8420), (2526, 8260), (2947, 7080), (3304, 6315), (3368, 6195), (3540, 5894), (4130, 5052), (4210, 4956)]