21178312

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{277}}^1\times {\mathrm{503}}^1$

素因数の和:805

約数の個数: 32

約数和(自身を含む): 42033600

約数和(自身を除く): 20855288

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 277, 503, 554, 1006, 1108, 2012, 2216, 4024, 5263, 9557, 10526, 19114, 21052, 38228, 42104, 76456, 139331, 278662, 557324, 1114648, 2647289, 5294578, 10589156, 21178312]

約数ペア:

[(1, 21178312), (2, 10589156), (4, 5294578), (8, 2647289), (19, 1114648), (38, 557324), (76, 278662), (152, 139331), (277, 76456), (503, 42104), (554, 38228), (1006, 21052), (1108, 19114), (2012, 10526), (2216, 9557), (4024, 5263)]