21661822

素因数分解:

$2^1\times 7^4\times {\mathrm{13}}^1\times {\mathrm{347}}^1$

素因数の和:390

約数の個数: 40

約数和(自身を含む): 40939416

約数和(自身を除く): 19277594

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 182, 343, 347, 637, 686, 694, 1274, 2401, 2429, 4459, 4511, 4802, 4858, 8918, 9022, 17003, 31213, 31577, 34006, 62426, 63154, 119021, 221039, 238042, 442078, 833147, 1547273, 1666294, 3094546, 10830911, 21661822]

約数ペア:

[(1, 21661822), (2, 10830911), (7, 3094546), (13, 1666294), (14, 1547273), (26, 833147), (49, 442078), (91, 238042), (98, 221039), (182, 119021), (343, 63154), (347, 62426), (637, 34006), (686, 31577), (694, 31213), (1274, 17003), (2401, 9022), (2429, 8918), (4459, 4858), (4511, 4802)]