20005804480

素因数分解:

$2^6\times 5^1\times {\mathrm{89}}^1\times {\mathrm{702451}}^1$

素因数の和:702557

約数の個数: 56

約数和(自身を含む): 48174158160

約数和(自身を除く): 28168353680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 160, 178, 320, 356, 445, 712, 890, 1424, 1780, 2848, 3560, 5696, 7120, 14240, 28480, 702451, 1404902, 2809804, 3512255, 5619608, 7024510, 11239216, 14049020, 22478432, 28098040, 44956864, 56196080, 62518139, 112392160, 125036278, 224784320, 250072556, 312590695, 500145112, 625181390, 1000290224, 1250362780, 2000580448, 2500725560, 4001160896, 5001451120, 10002902240, 20005804480]

約数ペア:

[(1, 20005804480), (2, 10002902240), (4, 5001451120), (5, 4001160896), (8, 2500725560), (10, 2000580448), (16, 1250362780), (20, 1000290224), (32, 625181390), (40, 500145112), (64, 312590695), (80, 250072556), (89, 224784320), (160, 125036278), (178, 112392160), (320, 62518139), (356, 56196080), (445, 44956864), (712, 28098040), (890, 22478432), (1424, 14049020), (1780, 11239216), (2848, 7024510), (3560, 5619608), (5696, 3512255), (7120, 2809804), (14240, 1404902), (28480, 702451)]