18809912

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:216

約数の個数: 64

約数和(自身を含む): 40629600

約数和(自身を除く): 21819688

約数列:

[1, 2, 4, 8, 11, 22, 37, 44, 53, 74, 88, 106, 109, 148, 212, 218, 296, 407, 424, 436, 583, 814, 872, 1166, 1199, 1628, 1961, 2332, 2398, 3256, 3922, 4033, 4664, 4796, 5777, 7844, 8066, 9592, 11554, 15688, 16132, 21571, 23108, 32264, 43142, 44363, 46216, 63547, 86284, 88726, 127094, 172568, 177452, 213749, 254188, 354904, 427498, 508376, 854996, 1709992, 2351239, 4702478, 9404956, 18809912]

約数ペア:

[(1, 18809912), (2, 9404956), (4, 4702478), (8, 2351239), (11, 1709992), (22, 854996), (37, 508376), (44, 427498), (53, 354904), (74, 254188), (88, 213749), (106, 177452), (109, 172568), (148, 127094), (212, 88726), (218, 86284), (296, 63547), (407, 46216), (424, 44363), (436, 43142), (583, 32264), (814, 23108), (872, 21571), (1166, 16132), (1199, 15688), (1628, 11554), (1961, 9592), (2332, 8066), (2398, 7844), (3256, 5777), (3922, 4796), (4033, 4664)]