81515120

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32869}}^1$

素因数の和:32913

約数の個数: 40

約数和(自身を含む): 195642240

約数和(自身を除く): 114127120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 32869, 65738, 131476, 164345, 262952, 328690, 525904, 657380, 1018939, 1314760, 2037878, 2629520, 4075756, 5094695, 8151512, 10189390, 16303024, 20378780, 40757560, 81515120]

約数ペア:

[(1, 81515120), (2, 40757560), (4, 20378780), (5, 16303024), (8, 10189390), (10, 8151512), (16, 5094695), (20, 4075756), (31, 2629520), (40, 2037878), (62, 1314760), (80, 1018939), (124, 657380), (155, 525904), (248, 328690), (310, 262952), (496, 164345), (620, 131476), (1240, 65738), (2480, 32869)]