318787880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1\times {\mathrm{811}}^1$

素因数の和:1170

約数の個数: 64

約数和(自身を含む): 743662080

約数和(自身を除く): 424874200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 317, 620, 634, 811, 1240, 1268, 1585, 1622, 2536, 3170, 3244, 4055, 6340, 6488, 8110, 9827, 12680, 16220, 19654, 25141, 32440, 39308, 49135, 50282, 78616, 98270, 100564, 125705, 196540, 201128, 251410, 257087, 393080, 502820, 514174, 1005640, 1028348, 1285435, 2056696, 2570870, 5141740, 7969697, 10283480, 15939394, 31878788, 39848485, 63757576, 79696970, 159393940, 318787880]

約数ペア:

[(1, 318787880), (2, 159393940), (4, 79696970), (5, 63757576), (8, 39848485), (10, 31878788), (20, 15939394), (31, 10283480), (40, 7969697), (62, 5141740), (124, 2570870), (155, 2056696), (248, 1285435), (310, 1028348), (317, 1005640), (620, 514174), (634, 502820), (811, 393080), (1240, 257087), (1268, 251410), (1585, 201128), (1622, 196540), (2536, 125705), (3170, 100564), (3244, 98270), (4055, 78616), (6340, 50282), (6488, 49135), (8110, 39308), (9827, 32440), (12680, 25141), (16220, 19654)]