21090850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1237}}^1$

素因数の和:1291

約数の個数: 48

約数和(自身を含む): 44211456

約数和(自身を除く): 23120606

約数列:

[1, 2, 5, 10, 11, 22, 25, 31, 50, 55, 62, 110, 155, 275, 310, 341, 550, 682, 775, 1237, 1550, 1705, 2474, 3410, 6185, 8525, 12370, 13607, 17050, 27214, 30925, 38347, 61850, 68035, 76694, 136070, 191735, 340175, 383470, 421817, 680350, 843634, 958675, 1917350, 2109085, 4218170, 10545425, 21090850]

約数ペア:

[(1, 21090850), (2, 10545425), (5, 4218170), (10, 2109085), (11, 1917350), (22, 958675), (25, 843634), (31, 680350), (50, 421817), (55, 383470), (62, 340175), (110, 191735), (155, 136070), (275, 76694), (310, 68035), (341, 61850), (550, 38347), (682, 30925), (775, 27214), (1237, 17050), (1550, 13607), (1705, 12370), (2474, 8525), (3410, 6185)]