19722813

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{557}}^1$

素因数の和:637

約数の個数: 32

約数和(自身を含む): 30533760

約数和(自身を除く): 10810947

約数列:

[1, 3, 11, 29, 33, 37, 87, 111, 319, 407, 557, 957, 1073, 1221, 1671, 3219, 6127, 11803, 16153, 18381, 20609, 35409, 48459, 61827, 177683, 226699, 533049, 597661, 680097, 1792983, 6574271, 19722813]

約数ペア:

[(1, 19722813), (3, 6574271), (11, 1792983), (29, 680097), (33, 597661), (37, 533049), (87, 226699), (111, 177683), (319, 61827), (407, 48459), (557, 35409), (957, 20609), (1073, 18381), (1221, 16153), (1671, 11803), (3219, 6127)]