21236990

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{1093}}^1$

素因数の和:1196

約数の個数: 32

約数和(自身を含む): 40171680

約数和(自身を除く): 18934690

約数列:

[1, 2, 5, 10, 29, 58, 67, 134, 145, 290, 335, 670, 1093, 1943, 2186, 3886, 5465, 9715, 10930, 19430, 31697, 63394, 73231, 146462, 158485, 316970, 366155, 732310, 2123699, 4247398, 10618495, 21236990]

約数ペア:

[(1, 21236990), (2, 10618495), (5, 4247398), (10, 2123699), (29, 732310), (58, 366155), (67, 316970), (134, 158485), (145, 146462), (290, 73231), (335, 63394), (670, 31697), (1093, 19430), (1943, 10930), (2186, 9715), (3886, 5465)]