21440880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{307}}^1$

素因数の和:423

約数の個数: 120

約数和(自身を含む): 72984912

約数和(自身を除く): 51544032

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 97, 120, 144, 180, 194, 240, 291, 307, 360, 388, 485, 582, 614, 720, 776, 873, 921, 970, 1164, 1228, 1455, 1535, 1552, 1746, 1842, 1940, 2328, 2456, 2763, 2910, 3070, 3492, 3684, 3880, 4365, 4605, 4656, 4912, 5526, 5820, 6140, 6984, 7368, 7760, 8730, 9210, 11052, 11640, 12280, 13815, 13968, 14736, 17460, 18420, 22104, 23280, 24560, 27630, 29779, 34920, 36840, 44208, 55260, 59558, 69840, 73680, 89337, 110520, 119116, 148895, 178674, 221040, 238232, 268011, 297790, 357348, 446685, 476464, 536022, 595580, 714696, 893370, 1072044, 1191160, 1340055, 1429392, 1786740, 2144088, 2382320, 2680110, 3573480, 4288176, 5360220, 7146960, 10720440, 21440880]

約数ペア:

[(1, 21440880), (2, 10720440), (3, 7146960), (4, 5360220), (5, 4288176), (6, 3573480), (8, 2680110), (9, 2382320), (10, 2144088), (12, 1786740), (15, 1429392), (16, 1340055), (18, 1191160), (20, 1072044), (24, 893370), (30, 714696), (36, 595580), (40, 536022), (45, 476464), (48, 446685), (60, 357348), (72, 297790), (80, 268011), (90, 238232), (97, 221040), (120, 178674), (144, 148895), (180, 119116), (194, 110520), (240, 89337), (291, 73680), (307, 69840), (360, 59558), (388, 55260), (485, 44208), (582, 36840), (614, 34920), (720, 29779), (776, 27630), (873, 24560), (921, 23280), (970, 22104), (1164, 18420), (1228, 17460), (1455, 14736), (1535, 13968), (1552, 13815), (1746, 12280), (1842, 11640), (1940, 11052), (2328, 9210), (2456, 8730), (2763, 7760), (2910, 7368), (3070, 6984), (3492, 6140), (3684, 5820), (3880, 5526), (4365, 4912), (4605, 4656)]