138718960

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{19483}}^1$

素因数の和:19585

約数の個数: 40

約数和(自身を含む): 326162160

約数和(自身を除く): 187443200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 19483, 38966, 77932, 97415, 155864, 194830, 311728, 389660, 779320, 1558640, 1733987, 3467974, 6935948, 8669935, 13871896, 17339870, 27743792, 34679740, 69359480, 138718960]

約数ペア:

[(1, 138718960), (2, 69359480), (4, 34679740), (5, 27743792), (8, 17339870), (10, 13871896), (16, 8669935), (20, 6935948), (40, 3467974), (80, 1733987), (89, 1558640), (178, 779320), (356, 389660), (445, 311728), (712, 194830), (890, 155864), (1424, 97415), (1780, 77932), (3560, 38966), (7120, 19483)]