20005160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1931}}^1$

素因数の和:1986

約数の個数: 64

約数和(自身を含む): 52859520

約数和(自身を除く): 32854360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 1931, 2072, 2590, 3862, 5180, 7724, 9655, 10360, 13517, 15448, 19310, 27034, 38620, 54068, 67585, 71447, 77240, 108136, 135170, 142894, 270340, 285788, 357235, 500129, 540680, 571576, 714470, 1000258, 1428940, 2000516, 2500645, 2857880, 4001032, 5001290, 10002580, 20005160]

約数ペア:

[(1, 20005160), (2, 10002580), (4, 5001290), (5, 4001032), (7, 2857880), (8, 2500645), (10, 2000516), (14, 1428940), (20, 1000258), (28, 714470), (35, 571576), (37, 540680), (40, 500129), (56, 357235), (70, 285788), (74, 270340), (140, 142894), (148, 135170), (185, 108136), (259, 77240), (280, 71447), (296, 67585), (370, 54068), (518, 38620), (740, 27034), (1036, 19310), (1295, 15448), (1480, 13517), (1931, 10360), (2072, 9655), (2590, 7724), (3862, 5180)]