78705760

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{10039}}^1$

素因数の和:10068

約数の個数: 72

約数和(自身を含む): 216321840

約数和(自身を除く): 137616080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 10039, 20078, 40156, 50195, 70273, 80312, 100390, 140546, 160624, 200780, 281092, 321248, 351365, 401560, 491911, 562184, 702730, 803120, 983822, 1124368, 1405460, 1606240, 1967644, 2248736, 2459555, 2810920, 3935288, 4919110, 5621840, 7870576, 9838220, 11243680, 15741152, 19676440, 39352880, 78705760]

約数ペア:

[(1, 78705760), (2, 39352880), (4, 19676440), (5, 15741152), (7, 11243680), (8, 9838220), (10, 7870576), (14, 5621840), (16, 4919110), (20, 3935288), (28, 2810920), (32, 2459555), (35, 2248736), (40, 1967644), (49, 1606240), (56, 1405460), (70, 1124368), (80, 983822), (98, 803120), (112, 702730), (140, 562184), (160, 491911), (196, 401560), (224, 351365), (245, 321248), (280, 281092), (392, 200780), (490, 160624), (560, 140546), (784, 100390), (980, 80312), (1120, 70273), (1568, 50195), (1960, 40156), (3920, 20078), (7840, 10039)]