21340304

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1171}}^1$

素因数の和:1263

約数の個数: 40

約数和(自身を含む): 44470368

約数和(自身を除く): 23130064

約数列:

[1, 2, 4, 8, 16, 17, 34, 67, 68, 134, 136, 268, 272, 536, 1072, 1139, 1171, 2278, 2342, 4556, 4684, 9112, 9368, 18224, 18736, 19907, 39814, 78457, 79628, 156914, 159256, 313828, 318512, 627656, 1255312, 1333769, 2667538, 5335076, 10670152, 21340304]

約数ペア:

[(1, 21340304), (2, 10670152), (4, 5335076), (8, 2667538), (16, 1333769), (17, 1255312), (34, 627656), (67, 318512), (68, 313828), (134, 159256), (136, 156914), (268, 79628), (272, 78457), (536, 39814), (1072, 19907), (1139, 18736), (1171, 18224), (2278, 9368), (2342, 9112), (4556, 4684)]