64861720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{21059}}^1$

素因数の和:21088

約数の個数: 64

約数和(自身を含む): 181958400

約数和(自身を除く): 117096680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 21059, 42118, 84236, 105295, 147413, 168472, 210590, 231649, 294826, 421180, 463298, 589652, 737065, 842360, 926596, 1158245, 1179304, 1474130, 1621543, 1853192, 2316490, 2948260, 3243086, 4632980, 5896520, 6486172, 8107715, 9265960, 12972344, 16215430, 32430860, 64861720]

約数ペア:

[(1, 64861720), (2, 32430860), (4, 16215430), (5, 12972344), (7, 9265960), (8, 8107715), (10, 6486172), (11, 5896520), (14, 4632980), (20, 3243086), (22, 2948260), (28, 2316490), (35, 1853192), (40, 1621543), (44, 1474130), (55, 1179304), (56, 1158245), (70, 926596), (77, 842360), (88, 737065), (110, 589652), (140, 463298), (154, 421180), (220, 294826), (280, 231649), (308, 210590), (385, 168472), (440, 147413), (616, 105295), (770, 84236), (1540, 42118), (3080, 21059)]