388978780

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{577}}^1\times {\mathrm{911}}^1$

素因数の和:1534

約数の個数: 48

約数和(自身を含む): 841309056

約数和(自身を除く): 452330276

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 577, 740, 911, 1154, 1822, 2308, 2885, 3644, 4555, 5770, 9110, 11540, 18220, 21349, 33707, 42698, 67414, 85396, 106745, 134828, 168535, 213490, 337070, 426980, 525647, 674140, 1051294, 2102588, 2628235, 5256470, 10512940, 19448939, 38897878, 77795756, 97244695, 194489390, 388978780]

約数ペア:

[(1, 388978780), (2, 194489390), (4, 97244695), (5, 77795756), (10, 38897878), (20, 19448939), (37, 10512940), (74, 5256470), (148, 2628235), (185, 2102588), (370, 1051294), (577, 674140), (740, 525647), (911, 426980), (1154, 337070), (1822, 213490), (2308, 168535), (2885, 134828), (3644, 106745), (4555, 85396), (5770, 67414), (9110, 42698), (11540, 33707), (18220, 21349)]