21490544

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{227}}^1$

素因数の和:393

約数の個数: 40

約数和(自身を含む): 42945168

約数和(自身を除く): 21454624

約数列:

[1, 2, 4, 8, 16, 61, 97, 122, 194, 227, 244, 388, 454, 488, 776, 908, 976, 1552, 1816, 3632, 5917, 11834, 13847, 22019, 23668, 27694, 44038, 47336, 55388, 88076, 94672, 110776, 176152, 221552, 352304, 1343159, 2686318, 5372636, 10745272, 21490544]

約数ペア:

[(1, 21490544), (2, 10745272), (4, 5372636), (8, 2686318), (16, 1343159), (61, 352304), (97, 221552), (122, 176152), (194, 110776), (227, 94672), (244, 88076), (388, 55388), (454, 47336), (488, 44038), (776, 27694), (908, 23668), (976, 22019), (1552, 13847), (1816, 11834), (3632, 5917)]