21759120

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{643}}^1$

素因数の和:709

約数の個数: 120

約数和(自身を含む): 74745216

約数和(自身を除く): 52986096

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 47, 48, 60, 72, 80, 90, 94, 120, 141, 144, 180, 188, 235, 240, 282, 360, 376, 423, 470, 564, 643, 705, 720, 752, 846, 940, 1128, 1286, 1410, 1692, 1880, 1929, 2115, 2256, 2572, 2820, 3215, 3384, 3760, 3858, 4230, 5144, 5640, 5787, 6430, 6768, 7716, 8460, 9645, 10288, 11280, 11574, 12860, 15432, 16920, 19290, 23148, 25720, 28935, 30221, 30864, 33840, 38580, 46296, 51440, 57870, 60442, 77160, 90663, 92592, 115740, 120884, 151105, 154320, 181326, 231480, 241768, 271989, 302210, 362652, 453315, 462960, 483536, 543978, 604420, 725304, 906630, 1087956, 1208840, 1359945, 1450608, 1813260, 2175912, 2417680, 2719890, 3626520, 4351824, 5439780, 7253040, 10879560, 21759120]

約数ペア:

[(1, 21759120), (2, 10879560), (3, 7253040), (4, 5439780), (5, 4351824), (6, 3626520), (8, 2719890), (9, 2417680), (10, 2175912), (12, 1813260), (15, 1450608), (16, 1359945), (18, 1208840), (20, 1087956), (24, 906630), (30, 725304), (36, 604420), (40, 543978), (45, 483536), (47, 462960), (48, 453315), (60, 362652), (72, 302210), (80, 271989), (90, 241768), (94, 231480), (120, 181326), (141, 154320), (144, 151105), (180, 120884), (188, 115740), (235, 92592), (240, 90663), (282, 77160), (360, 60442), (376, 57870), (423, 51440), (470, 46296), (564, 38580), (643, 33840), (705, 30864), (720, 30221), (752, 28935), (846, 25720), (940, 23148), (1128, 19290), (1286, 16920), (1410, 15432), (1692, 12860), (1880, 11574), (1929, 11280), (2115, 10288), (2256, 9645), (2572, 8460), (2820, 7716), (3215, 6768), (3384, 6430), (3760, 5787), (3858, 5640), (4230, 5144)]