20385666

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{797}}^1$

素因数の和:848

約数の個数: 72

約数和(自身を含む): 53218620

約数和(自身を除く): 32832954

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 29, 42, 49, 58, 63, 87, 98, 126, 147, 174, 203, 261, 294, 406, 441, 522, 609, 797, 882, 1218, 1421, 1594, 1827, 2391, 2842, 3654, 4263, 4782, 5579, 7173, 8526, 11158, 12789, 14346, 16737, 23113, 25578, 33474, 39053, 46226, 50211, 69339, 78106, 100422, 117159, 138678, 161791, 208017, 234318, 323582, 351477, 416034, 485373, 702954, 970746, 1132537, 1456119, 2265074, 2912238, 3397611, 6795222, 10192833, 20385666]

約数ペア:

[(1, 20385666), (2, 10192833), (3, 6795222), (6, 3397611), (7, 2912238), (9, 2265074), (14, 1456119), (18, 1132537), (21, 970746), (29, 702954), (42, 485373), (49, 416034), (58, 351477), (63, 323582), (87, 234318), (98, 208017), (126, 161791), (147, 138678), (174, 117159), (203, 100422), (261, 78106), (294, 69339), (406, 50211), (441, 46226), (522, 39053), (609, 33474), (797, 25578), (882, 23113), (1218, 16737), (1421, 14346), (1594, 12789), (1827, 11158), (2391, 8526), (2842, 7173), (3654, 5579), (4263, 4782)]