61971880

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{2417}}^1$

素因数の和:3069

約数の個数: 32

約数和(自身を含む): 139712040

約数和(自身を除く): 77740160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2417, 2564, 3205, 4834, 5128, 6410, 9668, 12085, 12820, 19336, 24170, 25640, 48340, 96680, 1549297, 3098594, 6197188, 7746485, 12394376, 15492970, 30985940, 61971880]

約数ペア:

[(1, 61971880), (2, 30985940), (4, 15492970), (5, 12394376), (8, 7746485), (10, 6197188), (20, 3098594), (40, 1549297), (641, 96680), (1282, 48340), (2417, 25640), (2564, 24170), (3205, 19336), (4834, 12820), (5128, 12085), (6410, 9668)]