21159008

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2677}}^1$

素因数の和:2719

約数の個数: 48

約数和(自身を含む): 47239920

約数和(自身を除く): 26080912

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 416, 494, 608, 988, 1976, 2677, 3952, 5354, 7904, 10708, 21416, 34801, 42832, 50863, 69602, 85664, 101726, 139204, 203452, 278408, 406904, 556816, 661219, 813808, 1113632, 1322438, 1627616, 2644876, 5289752, 10579504, 21159008]

約数ペア:

[(1, 21159008), (2, 10579504), (4, 5289752), (8, 2644876), (13, 1627616), (16, 1322438), (19, 1113632), (26, 813808), (32, 661219), (38, 556816), (52, 406904), (76, 278408), (104, 203452), (152, 139204), (208, 101726), (247, 85664), (304, 69602), (416, 50863), (494, 42832), (608, 34801), (988, 21416), (1976, 10708), (2677, 7904), (3952, 5354)]