131419520

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{257}}^1$

素因数の和:340

約数の個数: 128

約数和(自身を含む): 341055360

約数和(自身を除く): 209635840

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 47, 64, 68, 80, 85, 94, 128, 136, 160, 170, 188, 235, 257, 272, 320, 340, 376, 470, 514, 544, 640, 680, 752, 799, 940, 1028, 1088, 1285, 1360, 1504, 1598, 1880, 2056, 2176, 2570, 2720, 3008, 3196, 3760, 3995, 4112, 4369, 5140, 5440, 6016, 6392, 7520, 7990, 8224, 8738, 10280, 10880, 12079, 12784, 15040, 15980, 16448, 17476, 20560, 21845, 24158, 25568, 30080, 31960, 32896, 34952, 41120, 43690, 48316, 51136, 60395, 63920, 69904, 82240, 87380, 96632, 102272, 120790, 127840, 139808, 164480, 174760, 193264, 205343, 241580, 255680, 279616, 349520, 386528, 410686, 483160, 511360, 559232, 699040, 773056, 821372, 966320, 1026715, 1398080, 1546112, 1642744, 1932640, 2053430, 2796160, 3285488, 3865280, 4106860, 6570976, 7730560, 8213720, 13141952, 16427440, 26283904, 32854880, 65709760, 131419520]

約数ペア:

[(1, 131419520), (2, 65709760), (4, 32854880), (5, 26283904), (8, 16427440), (10, 13141952), (16, 8213720), (17, 7730560), (20, 6570976), (32, 4106860), (34, 3865280), (40, 3285488), (47, 2796160), (64, 2053430), (68, 1932640), (80, 1642744), (85, 1546112), (94, 1398080), (128, 1026715), (136, 966320), (160, 821372), (170, 773056), (188, 699040), (235, 559232), (257, 511360), (272, 483160), (320, 410686), (340, 386528), (376, 349520), (470, 279616), (514, 255680), (544, 241580), (640, 205343), (680, 193264), (752, 174760), (799, 164480), (940, 139808), (1028, 127840), (1088, 120790), (1285, 102272), (1360, 96632), (1504, 87380), (1598, 82240), (1880, 69904), (2056, 63920), (2176, 60395), (2570, 51136), (2720, 48316), (3008, 43690), (3196, 41120), (3760, 34952), (3995, 32896), (4112, 31960), (4369, 30080), (5140, 25568), (5440, 24158), (6016, 21845), (6392, 20560), (7520, 17476), (7990, 16448), (8224, 15980), (8738, 15040), (10280, 12784), (10880, 12079)]