20671938

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{359}}^1\times {\mathrm{457}}^1$

素因数の和:831

約数の個数: 48

約数和(自身を含む): 51442560

約数和(自身を除く): 30770622

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 359, 457, 718, 914, 1077, 1371, 2154, 2513, 2742, 3199, 3231, 4113, 5026, 6398, 6462, 7539, 8226, 9597, 15078, 19194, 22617, 28791, 45234, 57582, 164063, 328126, 492189, 984378, 1148441, 1476567, 2296882, 2953134, 3445323, 6890646, 10335969, 20671938]

約数ペア:

[(1, 20671938), (2, 10335969), (3, 6890646), (6, 3445323), (7, 2953134), (9, 2296882), (14, 1476567), (18, 1148441), (21, 984378), (42, 492189), (63, 328126), (126, 164063), (359, 57582), (457, 45234), (718, 28791), (914, 22617), (1077, 19194), (1371, 15078), (2154, 9597), (2513, 8226), (2742, 7539), (3199, 6462), (3231, 6398), (4113, 5026)]