20121815995

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{277}}^1\times {\mathrm{509}}^1$

素因数の和:904

約数の個数: 64

約数和(自身を含む): 27194538240

約数和(自身を除く): 7072722245

約数列:

[1, 5, 17, 23, 73, 85, 115, 277, 365, 391, 509, 1241, 1385, 1679, 1955, 2545, 4709, 6205, 6371, 8395, 8653, 11707, 20221, 23545, 28543, 31855, 37157, 43265, 58535, 101105, 108307, 140993, 142715, 185785, 199019, 343757, 465083, 541535, 631669, 704965, 854611, 995095, 1718785, 2325415, 2396881, 3158345, 3242839, 4273055, 7906411, 10292489, 11984405, 14528387, 16214195, 39532055, 51462445, 55128263, 72641935, 174972313, 236727247, 275641315, 874861565, 1183636235, 4024363199, 20121815995]

約数ペア:

[(1, 20121815995), (5, 4024363199), (17, 1183636235), (23, 874861565), (73, 275641315), (85, 236727247), (115, 174972313), (277, 72641935), (365, 55128263), (391, 51462445), (509, 39532055), (1241, 16214195), (1385, 14528387), (1679, 11984405), (1955, 10292489), (2545, 7906411), (4709, 4273055), (6205, 3242839), (6371, 3158345), (8395, 2396881), (8653, 2325415), (11707, 1718785), (20221, 995095), (23545, 854611), (28543, 704965), (31855, 631669), (37157, 541535), (43265, 465083), (58535, 343757), (101105, 199019), (108307, 185785), (140993, 142715)]