18870952

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:218

約数の個数: 64

約数和(自身を含む): 40392000

約数和(自身を除く): 21521048

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 67, 68, 76, 109, 134, 136, 152, 218, 268, 323, 436, 536, 646, 872, 1139, 1273, 1292, 1853, 2071, 2278, 2546, 2584, 3706, 4142, 4556, 5092, 7303, 7412, 8284, 9112, 10184, 14606, 14824, 16568, 21641, 29212, 35207, 43282, 58424, 70414, 86564, 124151, 138757, 140828, 173128, 248302, 277514, 281656, 496604, 555028, 993208, 1110056, 2358869, 4717738, 9435476, 18870952]

約数ペア:

[(1, 18870952), (2, 9435476), (4, 4717738), (8, 2358869), (17, 1110056), (19, 993208), (34, 555028), (38, 496604), (67, 281656), (68, 277514), (76, 248302), (109, 173128), (134, 140828), (136, 138757), (152, 124151), (218, 86564), (268, 70414), (323, 58424), (436, 43282), (536, 35207), (646, 29212), (872, 21641), (1139, 16568), (1273, 14824), (1292, 14606), (1853, 10184), (2071, 9112), (2278, 8284), (2546, 7412), (2584, 7303), (3706, 5092), (4142, 4556)]