20764420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{313}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 45577728

約数和(自身を除く): 24813308

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 107, 124, 155, 214, 310, 313, 428, 535, 620, 626, 1070, 1252, 1565, 2140, 3130, 3317, 6260, 6634, 9703, 13268, 16585, 19406, 33170, 33491, 38812, 48515, 66340, 66982, 97030, 133964, 167455, 194060, 334910, 669820, 1038221, 2076442, 4152884, 5191105, 10382210, 20764420]

約数ペア:

[(1, 20764420), (2, 10382210), (4, 5191105), (5, 4152884), (10, 2076442), (20, 1038221), (31, 669820), (62, 334910), (107, 194060), (124, 167455), (155, 133964), (214, 97030), (310, 66982), (313, 66340), (428, 48515), (535, 38812), (620, 33491), (626, 33170), (1070, 19406), (1252, 16585), (1565, 13268), (2140, 9703), (3130, 6634), (3317, 6260)]