21211892

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{619}}^1\times {\mathrm{659}}^1$

素因数の和:1295

約数の個数: 24

約数和(自身を含む): 40101600

約数和(自身を除く): 18889708

約数列:

[1, 2, 4, 13, 26, 52, 619, 659, 1238, 1318, 2476, 2636, 8047, 8567, 16094, 17134, 32188, 34268, 407921, 815842, 1631684, 5302973, 10605946, 21211892]

約数ペア:

[(1, 21211892), (2, 10605946), (4, 5302973), (13, 1631684), (26, 815842), (52, 407921), (619, 34268), (659, 32188), (1238, 17134), (1318, 16094), (2476, 8567), (2636, 8047)]