21503084

素因数分解:

$2^2\times {\mathrm{109}}^1\times {\mathrm{149}}^1\times {\mathrm{331}}^1$

素因数の和:593

約数の個数: 24

約数和(自身を含む): 38346000

約数和(自身を除く): 16842916

約数列:

[1, 2, 4, 109, 149, 218, 298, 331, 436, 596, 662, 1324, 16241, 32482, 36079, 49319, 64964, 72158, 98638, 144316, 197276, 5375771, 10751542, 21503084]

約数ペア:

[(1, 21503084), (2, 10751542), (4, 5375771), (109, 197276), (149, 144316), (218, 98638), (298, 72158), (331, 64964), (436, 49319), (596, 36079), (662, 32482), (1324, 16241)]