21910273

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 28827648

約数和(自身を除く): 6917375

約数列:

[1, 7, 11, 31, 67, 77, 137, 217, 341, 469, 737, 959, 1507, 2077, 2387, 4247, 5159, 9179, 10549, 14539, 22847, 29729, 46717, 64253, 100969, 159929, 284549, 327019, 706783, 1991843, 3130039, 21910273]

約数ペア:

[(1, 21910273), (7, 3130039), (11, 1991843), (31, 706783), (67, 327019), (77, 284549), (137, 159929), (217, 100969), (341, 64253), (469, 46717), (737, 29729), (959, 22847), (1507, 14539), (2077, 10549), (2387, 9179), (4247, 5159)]