19921240

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4931}}^1$

素因数の和:5043

約数の個数: 32

約数和(自身を含む): 45275760

約数和(自身を除く): 25354520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4931, 9862, 19724, 24655, 39448, 49310, 98620, 197240, 498031, 996062, 1992124, 2490155, 3984248, 4980310, 9960620, 19921240]

約数ペア:

[(1, 19921240), (2, 9960620), (4, 4980310), (5, 3984248), (8, 2490155), (10, 1992124), (20, 996062), (40, 498031), (101, 197240), (202, 98620), (404, 49310), (505, 39448), (808, 24655), (1010, 19724), (2020, 9862), (4040, 4931)]