51564820

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 111585600

約数和(自身を除く): 60020780

約数列:

[1, 2, 4, 5, 10, 20, 59, 89, 118, 178, 236, 295, 356, 445, 491, 590, 890, 982, 1180, 1780, 1964, 2455, 4910, 5251, 9820, 10502, 21004, 26255, 28969, 43699, 52510, 57938, 87398, 105020, 115876, 144845, 174796, 218495, 289690, 436990, 579380, 873980, 2578241, 5156482, 10312964, 12891205, 25782410, 51564820]

約数ペア:

[(1, 51564820), (2, 25782410), (4, 12891205), (5, 10312964), (10, 5156482), (20, 2578241), (59, 873980), (89, 579380), (118, 436990), (178, 289690), (236, 218495), (295, 174796), (356, 144845), (445, 115876), (491, 105020), (590, 87398), (890, 57938), (982, 52510), (1180, 43699), (1780, 28969), (1964, 26255), (2455, 21004), (4910, 10502), (5251, 9820)]