20640727055

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1\times {\mathrm{1549}}^1$

素因数の和:2004

約数の個数: 64

約数和(自身を含む): 29248128000

約数和(自身を除く): 8607400945

約数列:

[1, 5, 13, 17, 31, 65, 85, 155, 221, 389, 403, 527, 1105, 1549, 1945, 2015, 2635, 5057, 6613, 6851, 7745, 12059, 20137, 25285, 26333, 33065, 34255, 48019, 60295, 85969, 100685, 131665, 156767, 205003, 240095, 342329, 429845, 602561, 624247, 783835, 816323, 1025015, 1711645, 2665039, 3012805, 3121235, 4081615, 7833293, 10243537, 10612199, 13325195, 18679391, 39166465, 51217685, 53060995, 93396955, 133165981, 242832083, 317549647, 665829905, 1214160415, 1587748235, 4128145411, 20640727055]

約数ペア:

[(1, 20640727055), (5, 4128145411), (13, 1587748235), (17, 1214160415), (31, 665829905), (65, 317549647), (85, 242832083), (155, 133165981), (221, 93396955), (389, 53060995), (403, 51217685), (527, 39166465), (1105, 18679391), (1549, 13325195), (1945, 10612199), (2015, 10243537), (2635, 7833293), (5057, 4081615), (6613, 3121235), (6851, 3012805), (7745, 2665039), (12059, 1711645), (20137, 1025015), (25285, 816323), (26333, 783835), (33065, 624247), (34255, 602561), (48019, 429845), (60295, 342329), (85969, 240095), (100685, 205003), (131665, 156767)]