1640783895

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{87719}}^1$

素因数の和:87799

約数の個数: 32

約数和(自身を含む): 2778969600

約数和(自身を除く): 1138185705

約数列:

[1, 3, 5, 15, 29, 43, 87, 129, 145, 215, 435, 645, 1247, 3741, 6235, 18705, 87719, 263157, 438595, 1315785, 2543851, 3771917, 7631553, 11315751, 12719255, 18859585, 38157765, 56578755, 109385593, 328156779, 546927965, 1640783895]

約数ペア:

[(1, 1640783895), (3, 546927965), (5, 328156779), (15, 109385593), (29, 56578755), (43, 38157765), (87, 18859585), (129, 12719255), (145, 11315751), (215, 7631553), (435, 3771917), (645, 2543851), (1247, 1315785), (3741, 438595), (6235, 263157), (18705, 87719)]