20931784

素因数分解:

$2^3\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{727}}^1$

素因数の和:853

約数の個数: 32

約数和(自身を含む): 40622400

約数和(自身を除く): 19690616

約数列:

[1, 2, 4, 8, 59, 61, 118, 122, 236, 244, 472, 488, 727, 1454, 2908, 3599, 5816, 7198, 14396, 28792, 42893, 44347, 85786, 88694, 171572, 177388, 343144, 354776, 2616473, 5232946, 10465892, 20931784]

約数ペア:

[(1, 20931784), (2, 10465892), (4, 5232946), (8, 2616473), (59, 354776), (61, 343144), (118, 177388), (122, 171572), (236, 88694), (244, 85786), (472, 44347), (488, 42893), (727, 28792), (1454, 14396), (2908, 7198), (3599, 5816)]