12917905

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:154

約数の個数: 64

約数和(自身を含む): 21772800

約数和(自身を除く): 8854895

約数列:

[1, 5, 7, 11, 13, 29, 35, 55, 65, 77, 89, 91, 143, 145, 203, 319, 377, 385, 445, 455, 623, 715, 979, 1001, 1015, 1157, 1595, 1885, 2233, 2581, 2639, 3115, 4147, 4895, 5005, 5785, 6853, 8099, 11165, 12727, 12905, 13195, 18067, 20735, 28391, 29029, 33553, 34265, 40495, 63635, 89089, 90335, 141955, 145145, 167765, 198737, 234871, 369083, 445445, 993685, 1174355, 1845415, 2583581, 12917905]

約数ペア:

[(1, 12917905), (5, 2583581), (7, 1845415), (11, 1174355), (13, 993685), (29, 445445), (35, 369083), (55, 234871), (65, 198737), (77, 167765), (89, 145145), (91, 141955), (143, 90335), (145, 89089), (203, 63635), (319, 40495), (377, 34265), (385, 33553), (445, 29029), (455, 28391), (623, 20735), (715, 18067), (979, 13195), (1001, 12905), (1015, 12727), (1157, 11165), (1595, 8099), (1885, 6853), (2233, 5785), (2581, 5005), (2639, 4895), (3115, 4147)]