20122672

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1789}}^1$

素因数の和:1853

約数の個数: 40

約数和(自身を含む): 42172400

約数和(自身を除く): 22049728

約数列:

[1, 2, 4, 8, 16, 19, 37, 38, 74, 76, 148, 152, 296, 304, 592, 703, 1406, 1789, 2812, 3578, 5624, 7156, 11248, 14312, 28624, 33991, 66193, 67982, 132386, 135964, 264772, 271928, 529544, 543856, 1059088, 1257667, 2515334, 5030668, 10061336, 20122672]

約数ペア:

[(1, 20122672), (2, 10061336), (4, 5030668), (8, 2515334), (16, 1257667), (19, 1059088), (37, 543856), (38, 529544), (74, 271928), (76, 264772), (148, 135964), (152, 132386), (296, 67982), (304, 66193), (592, 33991), (703, 28624), (1406, 14312), (1789, 11248), (2812, 7156), (3578, 5624)]