129359920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{39439}}^1$

素因数の和:39493

約数の個数: 40

約数和(自身を含む): 308105280

約数和(自身を除く): 178745360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 39439, 78878, 157756, 197195, 315512, 394390, 631024, 788780, 1577560, 1616999, 3155120, 3233998, 6467996, 8084995, 12935992, 16169990, 25871984, 32339980, 64679960, 129359920]

約数ペア:

[(1, 129359920), (2, 64679960), (4, 32339980), (5, 25871984), (8, 16169990), (10, 12935992), (16, 8084995), (20, 6467996), (40, 3233998), (41, 3155120), (80, 1616999), (82, 1577560), (164, 788780), (205, 631024), (328, 394390), (410, 315512), (656, 197195), (820, 157756), (1640, 78878), (3280, 39439)]