208980160

素因数分解:

$2^6\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1973}}^1$

素因数の和:2321

約数の個数: 56

約数和(自身を含む): 499390416

約数和(自身を除く): 290410256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 331, 662, 1324, 1655, 1973, 2648, 3310, 3946, 5296, 6620, 7892, 9865, 10592, 13240, 15784, 19730, 21184, 26480, 31568, 39460, 52960, 63136, 78920, 105920, 126272, 157840, 315680, 631360, 653063, 1306126, 2612252, 3265315, 5224504, 6530630, 10449008, 13061260, 20898016, 26122520, 41796032, 52245040, 104490080, 208980160]

約数ペア:

[(1, 208980160), (2, 104490080), (4, 52245040), (5, 41796032), (8, 26122520), (10, 20898016), (16, 13061260), (20, 10449008), (32, 6530630), (40, 5224504), (64, 3265315), (80, 2612252), (160, 1306126), (320, 653063), (331, 631360), (662, 315680), (1324, 157840), (1655, 126272), (1973, 105920), (2648, 78920), (3310, 63136), (3946, 52960), (5296, 39460), (6620, 31568), (7892, 26480), (9865, 21184), (10592, 19730), (13240, 15784)]