21472185

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 42393600

約数和(自身を除く): 20921415

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 47, 57, 95, 105, 133, 141, 229, 235, 285, 329, 399, 665, 687, 705, 893, 987, 1145, 1603, 1645, 1995, 2679, 3435, 4351, 4465, 4809, 4935, 6251, 8015, 10763, 13053, 13395, 18753, 21755, 24045, 30457, 31255, 32289, 53815, 65265, 75341, 91371, 93765, 152285, 161445, 204497, 226023, 376705, 456855, 613491, 1022485, 1130115, 1431479, 3067455, 4294437, 7157395, 21472185]

約数ペア:

[(1, 21472185), (3, 7157395), (5, 4294437), (7, 3067455), (15, 1431479), (19, 1130115), (21, 1022485), (35, 613491), (47, 456855), (57, 376705), (95, 226023), (105, 204497), (133, 161445), (141, 152285), (229, 93765), (235, 91371), (285, 75341), (329, 65265), (399, 53815), (665, 32289), (687, 31255), (705, 30457), (893, 24045), (987, 21755), (1145, 18753), (1603, 13395), (1645, 13053), (1995, 10763), (2679, 8015), (3435, 6251), (4351, 4935), (4465, 4809)]