18928864

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{191}}^1$

素因数の和:383

約数の個数: 48

約数和(自身を含む): 39674880

約数和(自身を除く): 20746016

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 163, 191, 304, 326, 382, 608, 652, 764, 1304, 1528, 2608, 3056, 3097, 3629, 5216, 6112, 6194, 7258, 12388, 14516, 24776, 29032, 31133, 49552, 58064, 62266, 99104, 116128, 124532, 249064, 498128, 591527, 996256, 1183054, 2366108, 4732216, 9464432, 18928864]

約数ペア:

[(1, 18928864), (2, 9464432), (4, 4732216), (8, 2366108), (16, 1183054), (19, 996256), (32, 591527), (38, 498128), (76, 249064), (152, 124532), (163, 116128), (191, 99104), (304, 62266), (326, 58064), (382, 49552), (608, 31133), (652, 29032), (764, 24776), (1304, 14516), (1528, 12388), (2608, 7258), (3056, 6194), (3097, 6112), (3629, 5216)]