19979872

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1831}}^1$

素因数の和:1883

約数の個数: 48

約数和(自身を含む): 44319744

約数和(自身を除く): 24339872

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 32, 44, 62, 88, 124, 176, 248, 341, 352, 496, 682, 992, 1364, 1831, 2728, 3662, 5456, 7324, 10912, 14648, 20141, 29296, 40282, 56761, 58592, 80564, 113522, 161128, 227044, 322256, 454088, 624371, 644512, 908176, 1248742, 1816352, 2497484, 4994968, 9989936, 19979872]

約数ペア:

[(1, 19979872), (2, 9989936), (4, 4994968), (8, 2497484), (11, 1816352), (16, 1248742), (22, 908176), (31, 644512), (32, 624371), (44, 454088), (62, 322256), (88, 227044), (124, 161128), (176, 113522), (248, 80564), (341, 58592), (352, 56761), (496, 40282), (682, 29296), (992, 20141), (1364, 14648), (1831, 10912), (2728, 7324), (3662, 5456)]