21005491408

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{547}}^1\times {\mathrm{5897}}^1$

素因数の和:6500

約数の個数: 80

約数和(自身を含む): 45689022144

約数和(自身を除く): 24683530736

約数列:

[1, 2, 4, 8, 11, 16, 22, 37, 44, 74, 88, 148, 176, 296, 407, 547, 592, 814, 1094, 1628, 2188, 3256, 4376, 5897, 6017, 6512, 8752, 11794, 12034, 20239, 23588, 24068, 40478, 47176, 48136, 64867, 80956, 94352, 96272, 129734, 161912, 218189, 222629, 259468, 323824, 436378, 445258, 518936, 872756, 890516, 1037872, 1745512, 1781032, 2400079, 3225659, 3491024, 3562064, 4800158, 6451318, 9600316, 12902636, 19200632, 25805272, 35482249, 38401264, 51610544, 70964498, 119349383, 141928996, 238698766, 283857992, 477397532, 567715984, 954795064, 1312843213, 1909590128, 2625686426, 5251372852, 10502745704, 21005491408]

約数ペア:

[(1, 21005491408), (2, 10502745704), (4, 5251372852), (8, 2625686426), (11, 1909590128), (16, 1312843213), (22, 954795064), (37, 567715984), (44, 477397532), (74, 283857992), (88, 238698766), (148, 141928996), (176, 119349383), (296, 70964498), (407, 51610544), (547, 38401264), (592, 35482249), (814, 25805272), (1094, 19200632), (1628, 12902636), (2188, 9600316), (3256, 6451318), (4376, 4800158), (5897, 3562064), (6017, 3491024), (6512, 3225659), (8752, 2400079), (11794, 1781032), (12034, 1745512), (20239, 1037872), (23588, 890516), (24068, 872756), (40478, 518936), (47176, 445258), (48136, 436378), (64867, 323824), (80956, 259468), (94352, 222629), (96272, 218189), (129734, 161912)]