124989520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{499}}^1$

素因数の和:644

約数の個数: 80

約数和(自身を含む): 303552000

約数和(自身を除く): 178562480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 101, 124, 155, 202, 248, 310, 404, 496, 499, 505, 620, 808, 998, 1010, 1240, 1616, 1996, 2020, 2480, 2495, 3131, 3992, 4040, 4990, 6262, 7984, 8080, 9980, 12524, 15469, 15655, 19960, 25048, 30938, 31310, 39920, 50096, 50399, 61876, 62620, 77345, 100798, 123752, 125240, 154690, 201596, 247504, 250480, 251995, 309380, 403192, 503990, 618760, 806384, 1007980, 1237520, 1562369, 2015960, 3124738, 4031920, 6249476, 7811845, 12498952, 15623690, 24997904, 31247380, 62494760, 124989520]

約数ペア:

[(1, 124989520), (2, 62494760), (4, 31247380), (5, 24997904), (8, 15623690), (10, 12498952), (16, 7811845), (20, 6249476), (31, 4031920), (40, 3124738), (62, 2015960), (80, 1562369), (101, 1237520), (124, 1007980), (155, 806384), (202, 618760), (248, 503990), (310, 403192), (404, 309380), (496, 251995), (499, 250480), (505, 247504), (620, 201596), (808, 154690), (998, 125240), (1010, 123752), (1240, 100798), (1616, 77345), (1996, 62620), (2020, 61876), (2480, 50399), (2495, 50096), (3131, 39920), (3992, 31310), (4040, 30938), (4990, 25048), (6262, 19960), (7984, 15655), (8080, 15469), (9980, 12524)]