20318288

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{659}}^1$

素因数の和:755

約数の個数: 40

約数和(自身を含む): 41247360

約数和(自身を除く): 20929072

約数列:

[1, 2, 4, 8, 16, 41, 47, 82, 94, 164, 188, 328, 376, 656, 659, 752, 1318, 1927, 2636, 3854, 5272, 7708, 10544, 15416, 27019, 30832, 30973, 54038, 61946, 108076, 123892, 216152, 247784, 432304, 495568, 1269893, 2539786, 5079572, 10159144, 20318288]

約数ペア:

[(1, 20318288), (2, 10159144), (4, 5079572), (8, 2539786), (16, 1269893), (41, 495568), (47, 432304), (82, 247784), (94, 216152), (164, 123892), (188, 108076), (328, 61946), (376, 54038), (656, 30973), (659, 30832), (752, 27019), (1318, 15416), (1927, 10544), (2636, 7708), (3854, 5272)]