20919612

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{337}}^1\times {\mathrm{739}}^1$

素因数の和:1090

約数の個数: 48

約数和(自身を含む): 56026880

約数和(自身を除く): 35107268

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 337, 674, 739, 1011, 1348, 1478, 2022, 2217, 2359, 2956, 4044, 4434, 4718, 5173, 7077, 8868, 9436, 10346, 14154, 15519, 20692, 28308, 31038, 62076, 249043, 498086, 747129, 996172, 1494258, 1743301, 2988516, 3486602, 5229903, 6973204, 10459806, 20919612]

約数ペア:

[(1, 20919612), (2, 10459806), (3, 6973204), (4, 5229903), (6, 3486602), (7, 2988516), (12, 1743301), (14, 1494258), (21, 996172), (28, 747129), (42, 498086), (84, 249043), (337, 62076), (674, 31038), (739, 28308), (1011, 20692), (1348, 15519), (1478, 14154), (2022, 10346), (2217, 9436), (2359, 8868), (2956, 7077), (4044, 5173), (4434, 4718)]