20895364

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:249

約数の個数: 72

約数和(自身を含む): 46475520

約数和(自身を除く): 25580156

約数列:

[1, 2, 4, 7, 14, 19, 28, 31, 38, 49, 62, 76, 98, 124, 133, 181, 196, 217, 266, 362, 434, 532, 589, 724, 868, 931, 1178, 1267, 1519, 1862, 2356, 2534, 3038, 3439, 3724, 4123, 5068, 5611, 6076, 6878, 8246, 8869, 11222, 13756, 16492, 17738, 22444, 24073, 28861, 35476, 39277, 48146, 57722, 78554, 96292, 106609, 115444, 157108, 168511, 213218, 274939, 337022, 426436, 549878, 674044, 746263, 1099756, 1492526, 2985052, 5223841, 10447682, 20895364]

約数ペア:

[(1, 20895364), (2, 10447682), (4, 5223841), (7, 2985052), (14, 1492526), (19, 1099756), (28, 746263), (31, 674044), (38, 549878), (49, 426436), (62, 337022), (76, 274939), (98, 213218), (124, 168511), (133, 157108), (181, 115444), (196, 106609), (217, 96292), (266, 78554), (362, 57722), (434, 48146), (532, 39277), (589, 35476), (724, 28861), (868, 24073), (931, 22444), (1178, 17738), (1267, 16492), (1519, 13756), (1862, 11222), (2356, 8869), (2534, 8246), (3038, 6878), (3439, 6076), (3724, 5611), (4123, 5068)]