21387776

素因数分解:

$2^9\times {\mathrm{37}}^1\times {\mathrm{1129}}^1$

素因数の和:1184

約数の個数: 40

約数和(自身を含む): 43927620

約数和(自身を除く): 22539844

約数列:

[1, 2, 4, 8, 16, 32, 37, 64, 74, 128, 148, 256, 296, 512, 592, 1129, 1184, 2258, 2368, 4516, 4736, 9032, 9472, 18064, 18944, 36128, 41773, 72256, 83546, 144512, 167092, 289024, 334184, 578048, 668368, 1336736, 2673472, 5346944, 10693888, 21387776]

約数ペア:

[(1, 21387776), (2, 10693888), (4, 5346944), (8, 2673472), (16, 1336736), (32, 668368), (37, 578048), (64, 334184), (74, 289024), (128, 167092), (148, 144512), (256, 83546), (296, 72256), (512, 41773), (592, 36128), (1129, 18944), (1184, 18064), (2258, 9472), (2368, 9032), (4516, 4736)]