21125937

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{229}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 33914880

約数和(自身を除く): 12788943

約数列:

[1, 3, 7, 21, 23, 69, 161, 191, 229, 483, 573, 687, 1337, 1603, 4011, 4393, 4809, 5267, 13179, 15801, 30751, 36869, 43739, 92253, 110607, 131217, 306173, 918519, 1005997, 3017991, 7041979, 21125937]

約数ペア:

[(1, 21125937), (3, 7041979), (7, 3017991), (21, 1005997), (23, 918519), (69, 306173), (161, 131217), (191, 110607), (229, 92253), (483, 43739), (573, 36869), (687, 30751), (1337, 15801), (1603, 13179), (4011, 5267), (4393, 4809)]