21002361

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 31033728

約数和(自身を除く): 10031367

約数列:

[1, 3, 17, 43, 51, 61, 129, 157, 183, 471, 731, 1037, 2193, 2623, 2669, 3111, 6751, 7869, 8007, 9577, 20253, 28731, 44591, 114767, 133773, 162809, 344301, 411811, 488427, 1235433, 7000787, 21002361]

約数ペア:

[(1, 21002361), (3, 7000787), (17, 1235433), (43, 488427), (51, 411811), (61, 344301), (129, 162809), (157, 133773), (183, 114767), (471, 44591), (731, 28731), (1037, 20253), (2193, 9577), (2623, 8007), (2669, 7869), (3111, 6751)]