19881246

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1871}}^1$

素因数の和:1917

約数の個数: 64

約数和(自身を含む): 51757056

約数和(自身を除く): 31875810

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 23, 33, 42, 46, 66, 69, 77, 138, 154, 161, 231, 253, 322, 462, 483, 506, 759, 966, 1518, 1771, 1871, 3542, 3742, 5313, 5613, 10626, 11226, 13097, 20581, 26194, 39291, 41162, 43033, 61743, 78582, 86066, 123486, 129099, 144067, 258198, 288134, 301231, 432201, 473363, 602462, 864402, 903693, 946726, 1420089, 1807386, 2840178, 3313541, 6627082, 9940623, 19881246]

約数ペア:

[(1, 19881246), (2, 9940623), (3, 6627082), (6, 3313541), (7, 2840178), (11, 1807386), (14, 1420089), (21, 946726), (22, 903693), (23, 864402), (33, 602462), (42, 473363), (46, 432201), (66, 301231), (69, 288134), (77, 258198), (138, 144067), (154, 129099), (161, 123486), (231, 86066), (253, 78582), (322, 61743), (462, 43033), (483, 41162), (506, 39291), (759, 26194), (966, 20581), (1518, 13097), (1771, 11226), (1871, 10626), (3542, 5613), (3742, 5313)]