21070240

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1$

素因数の和:302

約数の個数: 96

約数和(自身を含む): 54432000

約数和(自身を除く): 33361760

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 29, 32, 38, 40, 58, 76, 80, 95, 116, 145, 152, 160, 190, 232, 239, 290, 304, 380, 464, 478, 551, 580, 608, 760, 928, 956, 1102, 1160, 1195, 1520, 1912, 2204, 2320, 2390, 2755, 3040, 3824, 4408, 4541, 4640, 4780, 5510, 6931, 7648, 8816, 9082, 9560, 11020, 13862, 17632, 18164, 19120, 22040, 22705, 27724, 34655, 36328, 38240, 44080, 45410, 55448, 69310, 72656, 88160, 90820, 110896, 131689, 138620, 145312, 181640, 221792, 263378, 277240, 363280, 526756, 554480, 658445, 726560, 1053512, 1108960, 1316890, 2107024, 2633780, 4214048, 5267560, 10535120, 21070240]

約数ペア:

[(1, 21070240), (2, 10535120), (4, 5267560), (5, 4214048), (8, 2633780), (10, 2107024), (16, 1316890), (19, 1108960), (20, 1053512), (29, 726560), (32, 658445), (38, 554480), (40, 526756), (58, 363280), (76, 277240), (80, 263378), (95, 221792), (116, 181640), (145, 145312), (152, 138620), (160, 131689), (190, 110896), (232, 90820), (239, 88160), (290, 72656), (304, 69310), (380, 55448), (464, 45410), (478, 44080), (551, 38240), (580, 36328), (608, 34655), (760, 27724), (928, 22705), (956, 22040), (1102, 19120), (1160, 18164), (1195, 17632), (1520, 13862), (1912, 11020), (2204, 9560), (2320, 9082), (2390, 8816), (2755, 7648), (3040, 6931), (3824, 5510), (4408, 4780), (4541, 4640)]