20781306

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4229}}^1$

素因数の和:4260

約数の個数: 64

約数和(自身を含む): 56851200

約数和(自身を除く): 36069894

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 42, 54, 63, 78, 91, 117, 126, 182, 189, 234, 273, 351, 378, 546, 702, 819, 1638, 2457, 4229, 4914, 8458, 12687, 25374, 29603, 38061, 54977, 59206, 76122, 88809, 109954, 114183, 164931, 177618, 228366, 266427, 329862, 384839, 494793, 532854, 769678, 799281, 989586, 1154517, 1484379, 1598562, 2309034, 2968758, 3463551, 6927102, 10390653, 20781306]

約数ペア:

[(1, 20781306), (2, 10390653), (3, 6927102), (6, 3463551), (7, 2968758), (9, 2309034), (13, 1598562), (14, 1484379), (18, 1154517), (21, 989586), (26, 799281), (27, 769678), (39, 532854), (42, 494793), (54, 384839), (63, 329862), (78, 266427), (91, 228366), (117, 177618), (126, 164931), (182, 114183), (189, 109954), (234, 88809), (273, 76122), (351, 59206), (378, 54977), (546, 38061), (702, 29603), (819, 25374), (1638, 12687), (2457, 8458), (4229, 4914)]