20321896

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 25400984

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 53, 56, 82, 106, 164, 167, 212, 287, 328, 334, 371, 424, 574, 668, 742, 1148, 1169, 1336, 1484, 2173, 2296, 2338, 2968, 4346, 4676, 6847, 8692, 8851, 9352, 13694, 15211, 17384, 17702, 27388, 30422, 35404, 47929, 54776, 60844, 61957, 70808, 95858, 121688, 123914, 191716, 247828, 362891, 383432, 495656, 725782, 1451564, 2540237, 2903128, 5080474, 10160948, 20321896]

約数ペア:

[(1, 20321896), (2, 10160948), (4, 5080474), (7, 2903128), (8, 2540237), (14, 1451564), (28, 725782), (41, 495656), (53, 383432), (56, 362891), (82, 247828), (106, 191716), (164, 123914), (167, 121688), (212, 95858), (287, 70808), (328, 61957), (334, 60844), (371, 54776), (424, 47929), (574, 35404), (668, 30422), (742, 27388), (1148, 17702), (1169, 17384), (1336, 15211), (1484, 13694), (2173, 9352), (2296, 8851), (2338, 8692), (2968, 6847), (4346, 4676)]