21207804964

素因数分解:

$2^2\times {\mathrm{173}}^1\times {\mathrm{211}}^1\times {\mathrm{337}}^1\times {\mathrm{431}}^1$

素因数の和:1156

約数の個数: 48

約数和(自身を含む): 37703667456

約数和(自身を除く): 16495862492

約数列:

[1, 2, 4, 173, 211, 337, 346, 422, 431, 674, 692, 844, 862, 1348, 1724, 36503, 58301, 71107, 73006, 74563, 90941, 116602, 142214, 145247, 146012, 149126, 181882, 233204, 284428, 290494, 298252, 363764, 580988, 12301511, 15732793, 24603022, 25127731, 30647117, 31465586, 49206044, 50255462, 61294234, 62931172, 100510924, 122588468, 5301951241, 10603902482, 21207804964]

約数ペア:

[(1, 21207804964), (2, 10603902482), (4, 5301951241), (173, 122588468), (211, 100510924), (337, 62931172), (346, 61294234), (422, 50255462), (431, 49206044), (674, 31465586), (692, 30647117), (844, 25127731), (862, 24603022), (1348, 15732793), (1724, 12301511), (36503, 580988), (58301, 363764), (71107, 298252), (73006, 290494), (74563, 284428), (90941, 233204), (116602, 181882), (142214, 149126), (145247, 146012)]