20104120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{523}}^1$

素因数の和:596

約数の個数: 48

約数和(自身を含む): 46829880

約数和(自身を除く): 26725760

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 523, 620, 961, 1046, 1240, 1922, 2092, 2615, 3844, 4184, 4805, 5230, 7688, 9610, 10460, 16213, 19220, 20920, 32426, 38440, 64852, 81065, 129704, 162130, 324260, 502603, 648520, 1005206, 2010412, 2513015, 4020824, 5026030, 10052060, 20104120]

約数ペア:

[(1, 20104120), (2, 10052060), (4, 5026030), (5, 4020824), (8, 2513015), (10, 2010412), (20, 1005206), (31, 648520), (40, 502603), (62, 324260), (124, 162130), (155, 129704), (248, 81065), (310, 64852), (523, 38440), (620, 32426), (961, 20920), (1046, 19220), (1240, 16213), (1922, 10460), (2092, 9610), (2615, 7688), (3844, 5230), (4184, 4805)]