16577140

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 35985600

約数和(自身を除く): 19408460

約数列:

[1, 2, 4, 5, 10, 20, 67, 89, 134, 139, 178, 268, 278, 335, 356, 445, 556, 670, 695, 890, 1340, 1390, 1780, 2780, 5963, 9313, 11926, 12371, 18626, 23852, 24742, 29815, 37252, 46565, 49484, 59630, 61855, 93130, 119260, 123710, 186260, 247420, 828857, 1657714, 3315428, 4144285, 8288570, 16577140]

約数ペア:

[(1, 16577140), (2, 8288570), (4, 4144285), (5, 3315428), (10, 1657714), (20, 828857), (67, 247420), (89, 186260), (134, 123710), (139, 119260), (178, 93130), (268, 61855), (278, 59630), (335, 49484), (356, 46565), (445, 37252), (556, 29815), (670, 24742), (695, 23852), (890, 18626), (1340, 12371), (1390, 11926), (1780, 9313), (2780, 5963)]