20640285770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{269561}}^1$

素因数の和:269631

約数の個数: 64

約数和(自身を含む): 43474959360

約数和(自身を除く): 22834673590

約数列:

[1, 2, 5, 10, 13, 19, 26, 31, 38, 62, 65, 95, 130, 155, 190, 247, 310, 403, 494, 589, 806, 1178, 1235, 2015, 2470, 2945, 4030, 5890, 7657, 15314, 38285, 76570, 269561, 539122, 1347805, 2695610, 3504293, 5121659, 7008586, 8356391, 10243318, 16712782, 17521465, 25608295, 35042930, 41781955, 51216590, 66581567, 83563910, 108633083, 133163134, 158771429, 217266166, 317542858, 332907835, 543165415, 665815670, 793857145, 1086330830, 1587714290, 2064028577, 4128057154, 10320142885, 20640285770]

約数ペア:

[(1, 20640285770), (2, 10320142885), (5, 4128057154), (10, 2064028577), (13, 1587714290), (19, 1086330830), (26, 793857145), (31, 665815670), (38, 543165415), (62, 332907835), (65, 317542858), (95, 217266166), (130, 158771429), (155, 133163134), (190, 108633083), (247, 83563910), (310, 66581567), (403, 51216590), (494, 41781955), (589, 35042930), (806, 25608295), (1178, 17521465), (1235, 16712782), (2015, 10243318), (2470, 8356391), (2945, 7008586), (4030, 5121659), (5890, 3504293), (7657, 2695610), (15314, 1347805), (38285, 539122), (76570, 269561)]