217339983

素因数分解:

$3^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{8273}}^1$

素因数の和:8428

約数の個数: 32

約数和(自身を含む): 370675200

約数和(自身を除く): 153335217

約数列:

[1, 3, 7, 9, 21, 27, 63, 139, 189, 417, 973, 1251, 2919, 3753, 8273, 8757, 24819, 26271, 57911, 74457, 173733, 223371, 521199, 1149947, 1563597, 3449841, 8049629, 10349523, 24148887, 31048569, 72446661, 217339983]

約数ペア:

[(1, 217339983), (3, 72446661), (7, 31048569), (9, 24148887), (21, 10349523), (27, 8049629), (63, 3449841), (139, 1563597), (189, 1149947), (417, 521199), (973, 223371), (1251, 173733), (2919, 74457), (3753, 57911), (8273, 26271), (8757, 24819)]