21992355

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{577}}^1$

素因数の和:617

約数の個数: 72

約数和(自身を含む): 47969376

約数和(自身を除く): 25977021

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 77, 99, 105, 121, 165, 231, 315, 363, 385, 495, 577, 605, 693, 847, 1089, 1155, 1731, 1815, 2541, 2885, 3465, 4039, 4235, 5193, 5445, 6347, 7623, 8655, 12117, 12705, 19041, 20195, 25965, 31735, 36351, 38115, 44429, 57123, 60585, 69817, 95205, 133287, 181755, 209451, 222145, 285615, 349085, 399861, 488719, 628353, 666435, 1047255, 1466157, 1999305, 2443595, 3141765, 4398471, 7330785, 21992355]

約数ペア:

[(1, 21992355), (3, 7330785), (5, 4398471), (7, 3141765), (9, 2443595), (11, 1999305), (15, 1466157), (21, 1047255), (33, 666435), (35, 628353), (45, 488719), (55, 399861), (63, 349085), (77, 285615), (99, 222145), (105, 209451), (121, 181755), (165, 133287), (231, 95205), (315, 69817), (363, 60585), (385, 57123), (495, 44429), (577, 38115), (605, 36351), (693, 31735), (847, 25965), (1089, 20195), (1155, 19041), (1731, 12705), (1815, 12117), (2541, 8655), (2885, 7623), (3465, 6347), (4039, 5445), (4235, 5193)]