21036128

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{163}}^1$

素因数の和:319

約数の個数: 48

約数和(自身を含む): 43187760

約数和(自身を除く): 22151632

約数列:

[1, 2, 4, 8, 16, 32, 37, 74, 109, 148, 163, 218, 296, 326, 436, 592, 652, 872, 1184, 1304, 1744, 2608, 3488, 4033, 5216, 6031, 8066, 12062, 16132, 17767, 24124, 32264, 35534, 48248, 64528, 71068, 96496, 129056, 142136, 192992, 284272, 568544, 657379, 1314758, 2629516, 5259032, 10518064, 21036128]

約数ペア:

[(1, 21036128), (2, 10518064), (4, 5259032), (8, 2629516), (16, 1314758), (32, 657379), (37, 568544), (74, 284272), (109, 192992), (148, 142136), (163, 129056), (218, 96496), (296, 71068), (326, 64528), (436, 48248), (592, 35534), (652, 32264), (872, 24124), (1184, 17767), (1304, 16132), (1744, 12062), (2608, 8066), (3488, 6031), (4033, 5216)]