217427340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{278753}}^1$

素因数の和:278778

約数の個数: 48

約数和(自身を含む): 655629408

約数和(自身を除く): 438202068

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 278753, 557506, 836259, 1115012, 1393765, 1672518, 2787530, 3345036, 3623789, 4181295, 5575060, 7247578, 8362590, 10871367, 14495156, 16725180, 18118945, 21742734, 36237890, 43485468, 54356835, 72475780, 108713670, 217427340]

約数ペア:

[(1, 217427340), (2, 108713670), (3, 72475780), (4, 54356835), (5, 43485468), (6, 36237890), (10, 21742734), (12, 18118945), (13, 16725180), (15, 14495156), (20, 10871367), (26, 8362590), (30, 7247578), (39, 5575060), (52, 4181295), (60, 3623789), (65, 3345036), (78, 2787530), (130, 1672518), (156, 1393765), (195, 1115012), (260, 836259), (390, 557506), (780, 278753)]