20275178

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{137}}^1$

素因数の和:219

約数の個数: 48

約数和(自身を含む): 39465792

約数和(自身を除く): 19190614

約数列:

[1, 2, 7, 11, 14, 22, 31, 62, 77, 137, 154, 217, 274, 341, 434, 682, 959, 961, 1507, 1918, 1922, 2387, 3014, 4247, 4774, 6727, 8494, 10549, 10571, 13454, 21098, 21142, 29729, 46717, 59458, 73997, 93434, 131657, 147994, 263314, 327019, 654038, 921599, 1448227, 1843198, 2896454, 10137589, 20275178]

約数ペア:

[(1, 20275178), (2, 10137589), (7, 2896454), (11, 1843198), (14, 1448227), (22, 921599), (31, 654038), (62, 327019), (77, 263314), (137, 147994), (154, 131657), (217, 93434), (274, 73997), (341, 59458), (434, 46717), (682, 29729), (959, 21142), (961, 21098), (1507, 13454), (1918, 10571), (1922, 10549), (2387, 8494), (3014, 6727), (4247, 4774)]