80918440

素因数分解:

$2^3\times 5^1\times {\mathrm{1013}}^1\times {\mathrm{1997}}^1$

素因数の和:3021

約数の個数: 32

約数和(自身を含む): 182337480

約数和(自身を除く): 101419040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1013, 1997, 2026, 3994, 4052, 5065, 7988, 8104, 9985, 10130, 15976, 19970, 20260, 39940, 40520, 79880, 2022961, 4045922, 8091844, 10114805, 16183688, 20229610, 40459220, 80918440]

約数ペア:

[(1, 80918440), (2, 40459220), (4, 20229610), (5, 16183688), (8, 10114805), (10, 8091844), (20, 4045922), (40, 2022961), (1013, 79880), (1997, 40520), (2026, 39940), (3994, 20260), (4052, 19970), (5065, 15976), (7988, 10130), (8104, 9985)]