257727990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{38873}}^1$

素因数の和:38913

約数の個数: 64

約数和(自身を含む): 705329856

約数和(自身を除く): 447601866

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 17, 26, 30, 34, 39, 51, 65, 78, 85, 102, 130, 170, 195, 221, 255, 390, 442, 510, 663, 1105, 1326, 2210, 3315, 6630, 38873, 77746, 116619, 194365, 233238, 388730, 505349, 583095, 660841, 1010698, 1166190, 1321682, 1516047, 1982523, 2526745, 3032094, 3304205, 3965046, 5053490, 6608410, 7580235, 8590933, 9912615, 15160470, 17181866, 19825230, 25772799, 42954665, 51545598, 85909330, 128863995, 257727990]

約数ペア:

[(1, 257727990), (2, 128863995), (3, 85909330), (5, 51545598), (6, 42954665), (10, 25772799), (13, 19825230), (15, 17181866), (17, 15160470), (26, 9912615), (30, 8590933), (34, 7580235), (39, 6608410), (51, 5053490), (65, 3965046), (78, 3304205), (85, 3032094), (102, 2526745), (130, 1982523), (170, 1516047), (195, 1321682), (221, 1166190), (255, 1010698), (390, 660841), (442, 583095), (510, 505349), (663, 388730), (1105, 233238), (1326, 194365), (2210, 116619), (3315, 77746), (6630, 38873)]