19974618

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:379

約数の個数: 48

約数和(自身を含む): 44849376

約数和(自身を除く): 24874758

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 131, 197, 258, 262, 387, 393, 394, 591, 774, 786, 1179, 1182, 1773, 2358, 3546, 5633, 8471, 11266, 16899, 16942, 25413, 25807, 33798, 50697, 50826, 51614, 76239, 77421, 101394, 152478, 154842, 232263, 464526, 1109701, 2219402, 3329103, 6658206, 9987309, 19974618]

約数ペア:

[(1, 19974618), (2, 9987309), (3, 6658206), (6, 3329103), (9, 2219402), (18, 1109701), (43, 464526), (86, 232263), (129, 154842), (131, 152478), (197, 101394), (258, 77421), (262, 76239), (387, 51614), (393, 50826), (394, 50697), (591, 33798), (774, 25807), (786, 25413), (1179, 16942), (1182, 16899), (1773, 11266), (2358, 8471), (3546, 5633)]