20955172

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{179}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 43666560

約数和(自身を除く): 22711388

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 113, 148, 179, 226, 259, 358, 452, 518, 716, 791, 1036, 1253, 1582, 2506, 3164, 4181, 5012, 6623, 8362, 13246, 16724, 20227, 26492, 29267, 40454, 46361, 58534, 80908, 92722, 117068, 141589, 185444, 283178, 566356, 748399, 1496798, 2993596, 5238793, 10477586, 20955172]

約数ペア:

[(1, 20955172), (2, 10477586), (4, 5238793), (7, 2993596), (14, 1496798), (28, 748399), (37, 566356), (74, 283178), (113, 185444), (148, 141589), (179, 117068), (226, 92722), (259, 80908), (358, 58534), (452, 46361), (518, 40454), (716, 29267), (791, 26492), (1036, 20227), (1253, 16724), (1582, 13246), (2506, 8362), (3164, 6623), (4181, 5012)]