20439888

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{479}}^1$

素因数の和:624

約数の個数: 80

約数和(自身を含む): 60948480

約数和(自身を除く): 40508592

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 127, 168, 254, 336, 381, 479, 508, 762, 889, 958, 1016, 1437, 1524, 1778, 1916, 2032, 2667, 2874, 3048, 3353, 3556, 3832, 5334, 5748, 6096, 6706, 7112, 7664, 10059, 10668, 11496, 13412, 14224, 20118, 21336, 22992, 26824, 40236, 42672, 53648, 60833, 80472, 121666, 160944, 182499, 243332, 364998, 425831, 486664, 729996, 851662, 973328, 1277493, 1459992, 1703324, 2554986, 2919984, 3406648, 5109972, 6813296, 10219944, 20439888]

約数ペア:

[(1, 20439888), (2, 10219944), (3, 6813296), (4, 5109972), (6, 3406648), (7, 2919984), (8, 2554986), (12, 1703324), (14, 1459992), (16, 1277493), (21, 973328), (24, 851662), (28, 729996), (42, 486664), (48, 425831), (56, 364998), (84, 243332), (112, 182499), (127, 160944), (168, 121666), (254, 80472), (336, 60833), (381, 53648), (479, 42672), (508, 40236), (762, 26824), (889, 22992), (958, 21336), (1016, 20118), (1437, 14224), (1524, 13412), (1778, 11496), (1916, 10668), (2032, 10059), (2667, 7664), (2874, 7112), (3048, 6706), (3353, 6096), (3556, 5748), (3832, 5334)]