21177954

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{9887}}^1$

素因数の和:9919

約数の個数: 48

約数和(自身を含む): 55531008

約数和(自身を除く): 34353054

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 34, 42, 51, 63, 102, 119, 126, 153, 238, 306, 357, 714, 1071, 2142, 9887, 19774, 29661, 59322, 69209, 88983, 138418, 168079, 177966, 207627, 336158, 415254, 504237, 622881, 1008474, 1176553, 1245762, 1512711, 2353106, 3025422, 3529659, 7059318, 10588977, 21177954]

約数ペア:

[(1, 21177954), (2, 10588977), (3, 7059318), (6, 3529659), (7, 3025422), (9, 2353106), (14, 1512711), (17, 1245762), (18, 1176553), (21, 1008474), (34, 622881), (42, 504237), (51, 415254), (63, 336158), (102, 207627), (119, 177966), (126, 168079), (153, 138418), (238, 88983), (306, 69209), (357, 59322), (714, 29661), (1071, 19774), (2142, 9887)]