81757893

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{151}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 140083200

約数和(自身を除く): 58325307

約数列:

[1, 3, 7, 19, 21, 23, 57, 59, 69, 133, 151, 161, 177, 399, 413, 437, 453, 483, 1057, 1121, 1239, 1311, 1357, 2869, 3059, 3171, 3363, 3473, 4071, 7847, 8607, 8909, 9177, 9499, 10419, 20083, 23541, 24311, 25783, 26727, 28497, 60249, 62363, 65987, 72933, 77349, 169271, 180481, 187089, 197961, 204907, 461909, 507813, 541443, 614721, 1184897, 1385727, 1434349, 3554691, 3893233, 4303047, 11679699, 27252631, 81757893]

約数ペア:

[(1, 81757893), (3, 27252631), (7, 11679699), (19, 4303047), (21, 3893233), (23, 3554691), (57, 1434349), (59, 1385727), (69, 1184897), (133, 614721), (151, 541443), (161, 507813), (177, 461909), (399, 204907), (413, 197961), (437, 187089), (453, 180481), (483, 169271), (1057, 77349), (1121, 72933), (1239, 65987), (1311, 62363), (1357, 60249), (2869, 28497), (3059, 26727), (3171, 25783), (3363, 24311), (3473, 23541), (4071, 20083), (7847, 10419), (8607, 9499), (8909, 9177)]