205707940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{1291}}^1$

素因数の和:1588

約数の個数: 48

約数和(自身を含む): 448003584

約数和(自身を除く): 242295644

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 257, 310, 514, 620, 1028, 1285, 1291, 2570, 2582, 5140, 5164, 6455, 7967, 12910, 15934, 25820, 31868, 39835, 40021, 79670, 80042, 159340, 160084, 200105, 331787, 400210, 663574, 800420, 1327148, 1658935, 3317870, 6635740, 10285397, 20570794, 41141588, 51426985, 102853970, 205707940]

約数ペア:

[(1, 205707940), (2, 102853970), (4, 51426985), (5, 41141588), (10, 20570794), (20, 10285397), (31, 6635740), (62, 3317870), (124, 1658935), (155, 1327148), (257, 800420), (310, 663574), (514, 400210), (620, 331787), (1028, 200105), (1285, 160084), (1291, 159340), (2570, 80042), (2582, 79670), (5140, 40021), (5164, 39835), (6455, 31868), (7967, 25820), (12910, 15934)]