20867886

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{347}}^1$

素因数の和:625

約数の個数: 48

約数和(自身を含む): 49022064

約数和(自身を除く): 28154178

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 257, 347, 514, 694, 771, 1041, 1542, 2082, 2313, 3123, 3341, 4511, 4626, 6246, 6682, 9022, 10023, 13533, 20046, 27066, 30069, 40599, 60138, 81198, 89179, 178358, 267537, 535074, 802611, 1159327, 1605222, 2318654, 3477981, 6955962, 10433943, 20867886]

約数ペア:

[(1, 20867886), (2, 10433943), (3, 6955962), (6, 3477981), (9, 2318654), (13, 1605222), (18, 1159327), (26, 802611), (39, 535074), (78, 267537), (117, 178358), (234, 89179), (257, 81198), (347, 60138), (514, 40599), (694, 30069), (771, 27066), (1041, 20046), (1542, 13533), (2082, 10023), (2313, 9022), (3123, 6682), (3341, 6246), (4511, 4626)]