21518238

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1$

素因数の和:337

約数の個数: 64

約数和(自身を含む): 51568128

約数和(自身を除く): 30049890

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 61, 74, 111, 122, 183, 222, 227, 259, 366, 427, 454, 518, 681, 777, 854, 1281, 1362, 1554, 1589, 2257, 2562, 3178, 4514, 4767, 6771, 8399, 9534, 13542, 13847, 15799, 16798, 25197, 27694, 31598, 41541, 47397, 50394, 58793, 83082, 94794, 96929, 117586, 176379, 193858, 290787, 352758, 512339, 581574, 1024678, 1537017, 3074034, 3586373, 7172746, 10759119, 21518238]

約数ペア:

[(1, 21518238), (2, 10759119), (3, 7172746), (6, 3586373), (7, 3074034), (14, 1537017), (21, 1024678), (37, 581574), (42, 512339), (61, 352758), (74, 290787), (111, 193858), (122, 176379), (183, 117586), (222, 96929), (227, 94794), (259, 83082), (366, 58793), (427, 50394), (454, 47397), (518, 41541), (681, 31598), (777, 27694), (854, 25197), (1281, 16798), (1362, 15799), (1554, 13847), (1589, 13542), (2257, 9534), (2562, 8399), (3178, 6771), (4514, 4767)]