20765164

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{509}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 43868160

約数和(自身を除く): 23102996

約数列:

[1, 2, 4, 7, 14, 28, 31, 47, 62, 94, 124, 188, 217, 329, 434, 509, 658, 868, 1018, 1316, 1457, 2036, 2914, 3563, 5828, 7126, 10199, 14252, 15779, 20398, 23923, 31558, 40796, 47846, 63116, 95692, 110453, 167461, 220906, 334922, 441812, 669844, 741613, 1483226, 2966452, 5191291, 10382582, 20765164]

約数ペア:

[(1, 20765164), (2, 10382582), (4, 5191291), (7, 2966452), (14, 1483226), (28, 741613), (31, 669844), (47, 441812), (62, 334922), (94, 220906), (124, 167461), (188, 110453), (217, 95692), (329, 63116), (434, 47846), (509, 40796), (658, 31558), (868, 23923), (1018, 20398), (1316, 15779), (1457, 14252), (2036, 10199), (2914, 7126), (3563, 5828)]