123997520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{49999}}^1$

素因数の和:50043

約数の個数: 40

約数和(自身を含む): 297600000

約数和(自身を除く): 173602480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 49999, 99998, 199996, 249995, 399992, 499990, 799984, 999980, 1549969, 1999960, 3099938, 3999920, 6199876, 7749845, 12399752, 15499690, 24799504, 30999380, 61998760, 123997520]

約数ペア:

[(1, 123997520), (2, 61998760), (4, 30999380), (5, 24799504), (8, 15499690), (10, 12399752), (16, 7749845), (20, 6199876), (31, 3999920), (40, 3099938), (62, 1999960), (80, 1549969), (124, 999980), (155, 799984), (248, 499990), (310, 399992), (496, 249995), (620, 199996), (1240, 99998), (2480, 49999)]