21194888

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{191}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 47416320

約数和(自身を除く): 26221432

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 97, 104, 143, 191, 194, 286, 382, 388, 572, 764, 776, 1067, 1144, 1261, 1528, 2101, 2134, 2483, 2522, 4202, 4268, 4966, 5044, 8404, 8536, 9932, 10088, 13871, 16808, 18527, 19864, 27313, 27742, 37054, 54626, 55484, 74108, 109252, 110968, 148216, 203797, 218504, 240851, 407594, 481702, 815188, 963404, 1630376, 1926808, 2649361, 5298722, 10597444, 21194888]

約数ペア:

[(1, 21194888), (2, 10597444), (4, 5298722), (8, 2649361), (11, 1926808), (13, 1630376), (22, 963404), (26, 815188), (44, 481702), (52, 407594), (88, 240851), (97, 218504), (104, 203797), (143, 148216), (191, 110968), (194, 109252), (286, 74108), (382, 55484), (388, 54626), (572, 37054), (764, 27742), (776, 27313), (1067, 19864), (1144, 18527), (1261, 16808), (1528, 13871), (2101, 10088), (2134, 9932), (2483, 8536), (2522, 8404), (4202, 5044), (4268, 4966)]