178972647

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{461}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 294940800

約数和(自身を除く): 115968153

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 139, 147, 399, 417, 461, 931, 973, 1383, 2641, 2793, 2919, 3227, 6811, 7923, 8759, 9681, 18487, 20433, 22589, 26277, 55461, 61313, 64079, 67767, 129409, 183939, 192237, 388227, 429191, 448553, 1217501, 1287573, 1345659, 3139871, 3652503, 8522507, 9419613, 25567521, 59657549, 178972647]

約数ペア:

[(1, 178972647), (3, 59657549), (7, 25567521), (19, 9419613), (21, 8522507), (49, 3652503), (57, 3139871), (133, 1345659), (139, 1287573), (147, 1217501), (399, 448553), (417, 429191), (461, 388227), (931, 192237), (973, 183939), (1383, 129409), (2641, 67767), (2793, 64079), (2919, 61313), (3227, 55461), (6811, 26277), (7923, 22589), (8759, 20433), (9681, 18487)]