20476960

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:458

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 36132320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 47, 56, 70, 80, 94, 112, 140, 160, 188, 224, 235, 280, 329, 376, 389, 470, 560, 658, 752, 778, 940, 1120, 1316, 1504, 1556, 1645, 1880, 1945, 2632, 2723, 3112, 3290, 3760, 3890, 5264, 5446, 6224, 6580, 7520, 7780, 10528, 10892, 12448, 13160, 13615, 15560, 18283, 21784, 26320, 27230, 31120, 36566, 43568, 52640, 54460, 62240, 73132, 87136, 91415, 108920, 127981, 146264, 182830, 217840, 255962, 292528, 365660, 435680, 511924, 585056, 639905, 731320, 1023848, 1279810, 1462640, 2047696, 2559620, 2925280, 4095392, 5119240, 10238480, 20476960]

約数ペア:

[(1, 20476960), (2, 10238480), (4, 5119240), (5, 4095392), (7, 2925280), (8, 2559620), (10, 2047696), (14, 1462640), (16, 1279810), (20, 1023848), (28, 731320), (32, 639905), (35, 585056), (40, 511924), (47, 435680), (56, 365660), (70, 292528), (80, 255962), (94, 217840), (112, 182830), (140, 146264), (160, 127981), (188, 108920), (224, 91415), (235, 87136), (280, 73132), (329, 62240), (376, 54460), (389, 52640), (470, 43568), (560, 36566), (658, 31120), (752, 27230), (778, 26320), (940, 21784), (1120, 18283), (1316, 15560), (1504, 13615), (1556, 13160), (1645, 12448), (1880, 10892), (1945, 10528), (2632, 7780), (2723, 7520), (3112, 6580), (3290, 6224), (3760, 5446), (3890, 5264)]