199968760

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{56171}}^1$

素因数の和:56271

約数の個数: 32

約数和(自身を含む): 454993200

約数和(自身を除く): 255024440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 56171, 112342, 224684, 280855, 449368, 561710, 1123420, 2246840, 4999219, 9998438, 19996876, 24996095, 39993752, 49992190, 99984380, 199968760]

約数ペア:

[(1, 199968760), (2, 99984380), (4, 49992190), (5, 39993752), (8, 24996095), (10, 19996876), (20, 9998438), (40, 4999219), (89, 2246840), (178, 1123420), (356, 561710), (445, 449368), (712, 280855), (890, 224684), (1780, 112342), (3560, 56171)]