20935278

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12781}}^1$

素因数の和:12809

約数の個数: 48

約数和(自身を含む): 55831776

約数和(自身を除く): 34896498

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 182, 234, 273, 546, 819, 1638, 12781, 25562, 38343, 76686, 89467, 115029, 166153, 178934, 230058, 268401, 332306, 498459, 536802, 805203, 996918, 1163071, 1495377, 1610406, 2326142, 2990754, 3489213, 6978426, 10467639, 20935278]

約数ペア:

[(1, 20935278), (2, 10467639), (3, 6978426), (6, 3489213), (7, 2990754), (9, 2326142), (13, 1610406), (14, 1495377), (18, 1163071), (21, 996918), (26, 805203), (39, 536802), (42, 498459), (63, 332306), (78, 268401), (91, 230058), (117, 178934), (126, 166153), (182, 115029), (234, 89467), (273, 76686), (546, 38343), (819, 25562), (1638, 12781)]