18387668

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{503}}^1$

素因数の和:576

約数の個数: 48

約数和(自身を含む): 37537920

約数和(自身を除く): 19150252

約数列:

[1, 2, 4, 13, 19, 26, 37, 38, 52, 74, 76, 148, 247, 481, 494, 503, 703, 962, 988, 1006, 1406, 1924, 2012, 2812, 6539, 9139, 9557, 13078, 18278, 18611, 19114, 26156, 36556, 37222, 38228, 74444, 124241, 241943, 248482, 353609, 483886, 496964, 707218, 967772, 1414436, 4596917, 9193834, 18387668]

約数ペア:

[(1, 18387668), (2, 9193834), (4, 4596917), (13, 1414436), (19, 967772), (26, 707218), (37, 496964), (38, 483886), (52, 353609), (74, 248482), (76, 241943), (148, 124241), (247, 74444), (481, 38228), (494, 37222), (503, 36556), (703, 26156), (962, 19114), (988, 18611), (1006, 18278), (1406, 13078), (1924, 9557), (2012, 9139), (2812, 6539)]