21303040

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:138

約数の個数: 144

約数和(自身を含む): 59603040

約数和(自身を除く): 38300000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 64, 68, 80, 85, 88, 89, 110, 128, 136, 160, 170, 176, 178, 187, 220, 256, 272, 320, 340, 352, 356, 374, 440, 445, 544, 640, 680, 704, 712, 748, 880, 890, 935, 979, 1088, 1280, 1360, 1408, 1424, 1496, 1513, 1760, 1780, 1870, 1958, 2176, 2720, 2816, 2848, 2992, 3026, 3520, 3560, 3740, 3916, 4352, 4895, 5440, 5696, 5984, 6052, 7040, 7120, 7480, 7565, 7832, 9790, 10880, 11392, 11968, 12104, 14080, 14240, 14960, 15130, 15664, 16643, 19580, 21760, 22784, 23936, 24208, 28480, 29920, 30260, 31328, 33286, 39160, 47872, 48416, 56960, 59840, 60520, 62656, 66572, 78320, 83215, 96832, 113920, 119680, 121040, 125312, 133144, 156640, 166430, 193664, 239360, 242080, 250624, 266288, 313280, 332860, 387328, 484160, 532576, 626560, 665720, 968320, 1065152, 1253120, 1331440, 1936640, 2130304, 2662880, 4260608, 5325760, 10651520, 21303040]

約数ペア:

[(1, 21303040), (2, 10651520), (4, 5325760), (5, 4260608), (8, 2662880), (10, 2130304), (11, 1936640), (16, 1331440), (17, 1253120), (20, 1065152), (22, 968320), (32, 665720), (34, 626560), (40, 532576), (44, 484160), (55, 387328), (64, 332860), (68, 313280), (80, 266288), (85, 250624), (88, 242080), (89, 239360), (110, 193664), (128, 166430), (136, 156640), (160, 133144), (170, 125312), (176, 121040), (178, 119680), (187, 113920), (220, 96832), (256, 83215), (272, 78320), (320, 66572), (340, 62656), (352, 60520), (356, 59840), (374, 56960), (440, 48416), (445, 47872), (544, 39160), (640, 33286), (680, 31328), (704, 30260), (712, 29920), (748, 28480), (880, 24208), (890, 23936), (935, 22784), (979, 21760), (1088, 19580), (1280, 16643), (1360, 15664), (1408, 15130), (1424, 14960), (1496, 14240), (1513, 14080), (1760, 12104), (1780, 11968), (1870, 11392), (1958, 10880), (2176, 9790), (2720, 7832), (2816, 7565), (2848, 7480), (2992, 7120), (3026, 7040), (3520, 6052), (3560, 5984), (3740, 5696), (3916, 5440), (4352, 4895)]