21041950

素因数分解:

$2^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{6899}}^1$

素因数の和:6972

約数の個数: 24

約数和(自身を含む): 39785400

約数和(自身を除く): 18743450

約数列:

[1, 2, 5, 10, 25, 50, 61, 122, 305, 610, 1525, 3050, 6899, 13798, 34495, 68990, 172475, 344950, 420839, 841678, 2104195, 4208390, 10520975, 21041950]

約数ペア:

[(1, 21041950), (2, 10520975), (5, 4208390), (10, 2104195), (25, 841678), (50, 420839), (61, 344950), (122, 172475), (305, 68990), (610, 34495), (1525, 13798), (3050, 6899)]