21586075

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 33140736

約数和(自身を除く): 11554661

約数列:

[1, 5, 7, 23, 25, 31, 35, 115, 155, 161, 173, 175, 217, 575, 713, 775, 805, 865, 1085, 1211, 3565, 3979, 4025, 4325, 4991, 5363, 5425, 6055, 17825, 19895, 24955, 26815, 27853, 30275, 37541, 99475, 123349, 124775, 134075, 139265, 187705, 616745, 696325, 863443, 938525, 3083725, 4317215, 21586075]

約数ペア:

[(1, 21586075), (5, 4317215), (7, 3083725), (23, 938525), (25, 863443), (31, 696325), (35, 616745), (115, 187705), (155, 139265), (161, 134075), (173, 124775), (175, 123349), (217, 99475), (575, 37541), (713, 30275), (775, 27853), (805, 26815), (865, 24955), (1085, 19895), (1211, 17825), (3565, 6055), (3979, 5425), (4025, 5363), (4325, 4991)]