21201055

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:391

約数の個数: 32

約数和(自身を含む): 28938240

約数和(自身を除く): 7737185

約数列:

[1, 5, 19, 23, 31, 95, 115, 155, 313, 437, 589, 713, 1565, 2185, 2945, 3565, 5947, 7199, 9703, 13547, 29735, 35995, 48515, 67735, 136781, 184357, 223169, 683905, 921785, 1115845, 4240211, 21201055]

約数ペア:

[(1, 21201055), (5, 4240211), (19, 1115845), (23, 921785), (31, 683905), (95, 223169), (115, 184357), (155, 136781), (313, 67735), (437, 48515), (589, 35995), (713, 29735), (1565, 13547), (2185, 9703), (2945, 7199), (3565, 5947)]