21433720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6959}}^1$

素因数の和:6988

約数の個数: 64

約数和(自身を含む): 60134400

約数和(自身を除く): 38700680

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, 6959, 13918, 27836, 34795, 48713, 55672, 69590, 76549, 97426, 139180, 153098, 194852, 243565, 278360, 306196, 382745, 389704, 487130, 535843, 612392, 765490, 974260, 1071686, 1530980, 1948520, 2143372, 2679215, 3061960, 4286744, 5358430, 10716860, 21433720]

約数ペア:

[(1, 21433720), (2, 10716860), (4, 5358430), (5, 4286744), (7, 3061960), (8, 2679215), (10, 2143372), (11, 1948520), (14, 1530980), (20, 1071686), (22, 974260), (28, 765490), (35, 612392), (40, 535843), (44, 487130), (55, 389704), (56, 382745), (70, 306196), (77, 278360), (88, 243565), (110, 194852), (140, 153098), (154, 139180), (220, 97426), (280, 76549), (308, 69590), (385, 55672), (440, 48713), (616, 34795), (770, 27836), (1540, 13918), (3080, 6959)]