19027844

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 37920960

約数和(自身を除く): 18893116

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 89, 113, 172, 178, 226, 356, 452, 473, 946, 979, 1243, 1892, 1958, 2486, 3827, 3916, 4859, 4972, 7654, 9718, 10057, 15308, 19436, 20114, 40228, 42097, 53449, 84194, 106898, 110627, 168388, 213796, 221254, 432451, 442508, 864902, 1729804, 4756961, 9513922, 19027844]

約数ペア:

[(1, 19027844), (2, 9513922), (4, 4756961), (11, 1729804), (22, 864902), (43, 442508), (44, 432451), (86, 221254), (89, 213796), (113, 168388), (172, 110627), (178, 106898), (226, 84194), (356, 53449), (452, 42097), (473, 40228), (946, 20114), (979, 19436), (1243, 15308), (1892, 10057), (1958, 9718), (2486, 7654), (3827, 4972), (3916, 4859)]