21149520

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12589}}^1$

素因数の和:12612

約数の個数: 80

約数和(自身を含む): 74935680

約数和(自身を除く): 53786160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12589, 25178, 37767, 50356, 62945, 75534, 88123, 100712, 125890, 151068, 176246, 188835, 201424, 251780, 264369, 302136, 352492, 377670, 440615, 503560, 528738, 604272, 704984, 755340, 881230, 1007120, 1057476, 1321845, 1409968, 1510680, 1762460, 2114952, 2643690, 3021360, 3524920, 4229904, 5287380, 7049840, 10574760, 21149520]

約数ペア:

[(1, 21149520), (2, 10574760), (3, 7049840), (4, 5287380), (5, 4229904), (6, 3524920), (7, 3021360), (8, 2643690), (10, 2114952), (12, 1762460), (14, 1510680), (15, 1409968), (16, 1321845), (20, 1057476), (21, 1007120), (24, 881230), (28, 755340), (30, 704984), (35, 604272), (40, 528738), (42, 503560), (48, 440615), (56, 377670), (60, 352492), (70, 302136), (80, 264369), (84, 251780), (105, 201424), (112, 188835), (120, 176246), (140, 151068), (168, 125890), (210, 100712), (240, 88123), (280, 75534), (336, 62945), (420, 50356), (560, 37767), (840, 25178), (1680, 12589)]