21396928

素因数分解:

$2^6\times 7^2\times {\mathrm{6823}}^1$

素因数の和:6849

約数の個数: 42

約数和(自身を含む): 49398936

約数和(自身を除く): 28002008

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 196, 224, 392, 448, 784, 1568, 3136, 6823, 13646, 27292, 47761, 54584, 95522, 109168, 191044, 218336, 334327, 382088, 436672, 668654, 764176, 1337308, 1528352, 2674616, 3056704, 5349232, 10698464, 21396928]

約数ペア:

[(1, 21396928), (2, 10698464), (4, 5349232), (7, 3056704), (8, 2674616), (14, 1528352), (16, 1337308), (28, 764176), (32, 668654), (49, 436672), (56, 382088), (64, 334327), (98, 218336), (112, 191044), (196, 109168), (224, 95522), (392, 54584), (448, 47761), (784, 27292), (1568, 13646), (3136, 6823)]