20707720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2477}}^1$

素因数の和:2518

約数の個数: 64

約数和(自身を含む): 53524800

約数和(自身を除く): 32817080

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2477, 4180, 4954, 8360, 9908, 12385, 19816, 24770, 27247, 47063, 49540, 54494, 94126, 99080, 108988, 136235, 188252, 217976, 235315, 272470, 376504, 470630, 517693, 544940, 941260, 1035386, 1089880, 1882520, 2070772, 2588465, 4141544, 5176930, 10353860, 20707720]

約数ペア:

[(1, 20707720), (2, 10353860), (4, 5176930), (5, 4141544), (8, 2588465), (10, 2070772), (11, 1882520), (19, 1089880), (20, 1035386), (22, 941260), (38, 544940), (40, 517693), (44, 470630), (55, 376504), (76, 272470), (88, 235315), (95, 217976), (110, 188252), (152, 136235), (190, 108988), (209, 99080), (220, 94126), (380, 54494), (418, 49540), (440, 47063), (760, 27247), (836, 24770), (1045, 19816), (1672, 12385), (2090, 9908), (2477, 8360), (4180, 4954)]