21913402

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{409}}^1$

素因数の和:550

約数の個数: 32

約数和(自身を含む): 38966400

約数和(自身を除く): 17052998

約数列:

[1, 2, 7, 14, 43, 86, 89, 178, 301, 409, 602, 623, 818, 1246, 2863, 3827, 5726, 7654, 17587, 26789, 35174, 36401, 53578, 72802, 123109, 246218, 254807, 509614, 1565243, 3130486, 10956701, 21913402]

約数ペア:

[(1, 21913402), (2, 10956701), (7, 3130486), (14, 1565243), (43, 509614), (86, 254807), (89, 246218), (178, 123109), (301, 72802), (409, 53578), (602, 36401), (623, 35174), (818, 26789), (1246, 17587), (2863, 7654), (3827, 5726)]