21069670

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{641}}^1$

素因数の和:840

約数の個数: 32

約数和(自身を含む): 40214880

約数和(自身を除く): 19145210

約数列:

[1, 2, 5, 10, 19, 38, 95, 173, 190, 346, 641, 865, 1282, 1730, 3205, 3287, 6410, 6574, 12179, 16435, 24358, 32870, 60895, 110893, 121790, 221786, 554465, 1108930, 2106967, 4213934, 10534835, 21069670]

約数ペア:

[(1, 21069670), (2, 10534835), (5, 4213934), (10, 2106967), (19, 1108930), (38, 554465), (95, 221786), (173, 121790), (190, 110893), (346, 60895), (641, 32870), (865, 24358), (1282, 16435), (1730, 12179), (3205, 6574), (3287, 6410)]