21956040

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{859}}^1$

素因数の和:947

約数の個数: 96

約数和(自身を含む): 72446400

約数和(自身を除く): 50490360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 71, 72, 90, 120, 142, 180, 213, 284, 355, 360, 426, 568, 639, 710, 852, 859, 1065, 1278, 1420, 1704, 1718, 2130, 2556, 2577, 2840, 3195, 3436, 4260, 4295, 5112, 5154, 6390, 6872, 7731, 8520, 8590, 10308, 12780, 12885, 15462, 17180, 20616, 25560, 25770, 30924, 34360, 38655, 51540, 60989, 61848, 77310, 103080, 121978, 154620, 182967, 243956, 304945, 309240, 365934, 487912, 548901, 609890, 731868, 914835, 1097802, 1219780, 1463736, 1829670, 2195604, 2439560, 2744505, 3659340, 4391208, 5489010, 7318680, 10978020, 21956040]

約数ペア:

[(1, 21956040), (2, 10978020), (3, 7318680), (4, 5489010), (5, 4391208), (6, 3659340), (8, 2744505), (9, 2439560), (10, 2195604), (12, 1829670), (15, 1463736), (18, 1219780), (20, 1097802), (24, 914835), (30, 731868), (36, 609890), (40, 548901), (45, 487912), (60, 365934), (71, 309240), (72, 304945), (90, 243956), (120, 182967), (142, 154620), (180, 121978), (213, 103080), (284, 77310), (355, 61848), (360, 60989), (426, 51540), (568, 38655), (639, 34360), (710, 30924), (852, 25770), (859, 25560), (1065, 20616), (1278, 17180), (1420, 15462), (1704, 12885), (1718, 12780), (2130, 10308), (2556, 8590), (2577, 8520), (2840, 7731), (3195, 6872), (3436, 6390), (4260, 5154), (4295, 5112)]