21436700780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{494617}}^1$

素因数の和:494834

約数の個数: 48

約数和(自身を含む): 49358919456

約数和(自身を除く): 27922218676

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 197, 220, 394, 788, 985, 1970, 2167, 3940, 4334, 8668, 10835, 21670, 43340, 494617, 989234, 1978468, 2473085, 4946170, 5440787, 9892340, 10881574, 21763148, 27203935, 54407870, 97439549, 108815740, 194879098, 389758196, 487197745, 974395490, 1071835039, 1948790980, 2143670078, 4287340156, 5359175195, 10718350390, 21436700780]

約数ペア:

[(1, 21436700780), (2, 10718350390), (4, 5359175195), (5, 4287340156), (10, 2143670078), (11, 1948790980), (20, 1071835039), (22, 974395490), (44, 487197745), (55, 389758196), (110, 194879098), (197, 108815740), (220, 97439549), (394, 54407870), (788, 27203935), (985, 21763148), (1970, 10881574), (2167, 9892340), (3940, 5440787), (4334, 4946170), (8668, 2473085), (10835, 1978468), (21670, 989234), (43340, 494617)]