20124000008

素因数分解:

$2^3\times 7^1\times {\mathrm{157}}^1\times {\mathrm{947}}^1\times {\mathrm{2417}}^1$

素因数の和:3534

約数の個数: 64

約数和(自身を含む): 43461325440

約数和(自身を除く): 23337325432

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 157, 314, 628, 947, 1099, 1256, 1894, 2198, 2417, 3788, 4396, 4834, 6629, 7576, 8792, 9668, 13258, 16919, 19336, 26516, 33838, 53032, 67676, 135352, 148679, 297358, 379469, 594716, 758938, 1040753, 1189432, 1517876, 2081506, 2288899, 2656283, 3035752, 4163012, 4577798, 5312566, 8326024, 9155596, 10625132, 16022293, 18311192, 21250264, 32044586, 64089172, 128178344, 359357143, 718714286, 1437428572, 2515500001, 2874857144, 5031000002, 10062000004, 20124000008]

約数ペア:

[(1, 20124000008), (2, 10062000004), (4, 5031000002), (7, 2874857144), (8, 2515500001), (14, 1437428572), (28, 718714286), (56, 359357143), (157, 128178344), (314, 64089172), (628, 32044586), (947, 21250264), (1099, 18311192), (1256, 16022293), (1894, 10625132), (2198, 9155596), (2417, 8326024), (3788, 5312566), (4396, 4577798), (4834, 4163012), (6629, 3035752), (7576, 2656283), (8792, 2288899), (9668, 2081506), (13258, 1517876), (16919, 1189432), (19336, 1040753), (26516, 758938), (33838, 594716), (53032, 379469), (67676, 297358), (135352, 148679)]