21479388

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{6911}}^1$

素因数の和:6962

約数の個数: 48

約数和(自身を含む): 58834944

約数和(自身を除く): 37355556

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 37, 42, 74, 84, 111, 148, 222, 259, 444, 518, 777, 1036, 1554, 3108, 6911, 13822, 20733, 27644, 41466, 48377, 82932, 96754, 145131, 193508, 255707, 290262, 511414, 580524, 767121, 1022828, 1534242, 1789949, 3068484, 3579898, 5369847, 7159796, 10739694, 21479388]

約数ペア:

[(1, 21479388), (2, 10739694), (3, 7159796), (4, 5369847), (6, 3579898), (7, 3068484), (12, 1789949), (14, 1534242), (21, 1022828), (28, 767121), (37, 580524), (42, 511414), (74, 290262), (84, 255707), (111, 193508), (148, 145131), (222, 96754), (259, 82932), (444, 48377), (518, 41466), (777, 27644), (1036, 20733), (1554, 13822), (3108, 6911)]