21100784

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{167}}^1$

素因数の和:377

約数の個数: 40

約数和(自身を含む): 42184800

約数和(自身を除く): 21084016

約数列:

[1, 2, 4, 8, 16, 53, 106, 149, 167, 212, 298, 334, 424, 596, 668, 848, 1192, 1336, 2384, 2672, 7897, 8851, 15794, 17702, 24883, 31588, 35404, 49766, 63176, 70808, 99532, 126352, 141616, 199064, 398128, 1318799, 2637598, 5275196, 10550392, 21100784]

約数ペア:

[(1, 21100784), (2, 10550392), (4, 5275196), (8, 2637598), (16, 1318799), (53, 398128), (106, 199064), (149, 141616), (167, 126352), (212, 99532), (298, 70808), (334, 63176), (424, 49766), (596, 35404), (668, 31588), (848, 24883), (1192, 17702), (1336, 15794), (2384, 8851), (2672, 7897)]