20807502009

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{631}}^1\times {\mathrm{38299}}^1$

素因数の和:38981

約数の個数: 32

約数和(自身を含む): 32532326400

約数和(自身を除く): 11724824391

約数列:

[1, 3, 7, 21, 41, 123, 287, 631, 861, 1893, 4417, 13251, 25871, 38299, 77613, 114897, 181097, 268093, 543291, 804279, 1570259, 4710777, 10991813, 24166669, 32975439, 72500007, 169166683, 507500049, 990833429, 2972500287, 6935834003, 20807502009]

約数ペア:

[(1, 20807502009), (3, 6935834003), (7, 2972500287), (21, 990833429), (41, 507500049), (123, 169166683), (287, 72500007), (631, 32975439), (861, 24166669), (1893, 10991813), (4417, 4710777), (13251, 1570259), (25871, 804279), (38299, 543291), (77613, 268093), (114897, 181097)]