21997136

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10337}}^1$

素因数の和:10371

約数の個数: 40

約数和(自身を含む): 51276480

約数和(自身を除く): 29279344

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 10337, 20674, 41348, 72359, 82696, 144718, 165392, 196403, 289436, 392806, 578872, 785612, 1157744, 1374821, 1571224, 2749642, 3142448, 5499284, 10998568, 21997136]

約数ペア:

[(1, 21997136), (2, 10998568), (4, 5499284), (7, 3142448), (8, 2749642), (14, 1571224), (16, 1374821), (19, 1157744), (28, 785612), (38, 578872), (56, 392806), (76, 289436), (112, 196403), (133, 165392), (152, 144718), (266, 82696), (304, 72359), (532, 41348), (1064, 20674), (2128, 10337)]