21490488

素因数分解:

$2^3\times 3^3\times {\mathrm{37}}^1\times {\mathrm{2689}}^1$

素因数の和:2741

約数の個数: 64

約数和(自身を含む): 61332000

約数和(自身を除く): 39841512

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 37, 54, 72, 74, 108, 111, 148, 216, 222, 296, 333, 444, 666, 888, 999, 1332, 1998, 2664, 2689, 3996, 5378, 7992, 8067, 10756, 16134, 21512, 24201, 32268, 48402, 64536, 72603, 96804, 99493, 145206, 193608, 198986, 290412, 298479, 397972, 580824, 596958, 795944, 895437, 1193916, 1790874, 2387832, 2686311, 3581748, 5372622, 7163496, 10745244, 21490488]

約数ペア:

[(1, 21490488), (2, 10745244), (3, 7163496), (4, 5372622), (6, 3581748), (8, 2686311), (9, 2387832), (12, 1790874), (18, 1193916), (24, 895437), (27, 795944), (36, 596958), (37, 580824), (54, 397972), (72, 298479), (74, 290412), (108, 198986), (111, 193608), (148, 145206), (216, 99493), (222, 96804), (296, 72603), (333, 64536), (444, 48402), (666, 32268), (888, 24201), (999, 21512), (1332, 16134), (1998, 10756), (2664, 8067), (2689, 7992), (3996, 5378)]