278345680

素因数分解:

$2^4\times 5^1\times {\mathrm{3479321}}^1$

素因数の和:3479334

約数の個数: 20

約数和(自身を含む): 647153892

約数和(自身を除く): 368808212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3479321, 6958642, 13917284, 17396605, 27834568, 34793210, 55669136, 69586420, 139172840, 278345680]

約数ペア:

[(1, 278345680), (2, 139172840), (4, 69586420), (5, 55669136), (8, 34793210), (10, 27834568), (16, 17396605), (20, 13917284), (40, 6958642), (80, 3479321)]