18937240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1439}}^1$

素因数の和:1504

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 30829160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1316, 1439, 1645, 1880, 2632, 2878, 3290, 5756, 6580, 7195, 10073, 11512, 13160, 14390, 20146, 28780, 40292, 50365, 57560, 67633, 80584, 100730, 135266, 201460, 270532, 338165, 402920, 473431, 541064, 676330, 946862, 1352660, 1893724, 2367155, 2705320, 3787448, 4734310, 9468620, 18937240]

約数ペア:

[(1, 18937240), (2, 9468620), (4, 4734310), (5, 3787448), (7, 2705320), (8, 2367155), (10, 1893724), (14, 1352660), (20, 946862), (28, 676330), (35, 541064), (40, 473431), (47, 402920), (56, 338165), (70, 270532), (94, 201460), (140, 135266), (188, 100730), (235, 80584), (280, 67633), (329, 57560), (376, 50365), (470, 40292), (658, 28780), (940, 20146), (1316, 14390), (1439, 13160), (1645, 11512), (1880, 10073), (2632, 7195), (2878, 6580), (3290, 5756)]