80391680

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1013}}^1$

素因数の和:1067

約数の個数: 80

約数和(自身を含む): 199165824

約数和(自身を除く): 118774144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1013, 1240, 1280, 1984, 2026, 2480, 2560, 3968, 4052, 4960, 5065, 7936, 8104, 9920, 10130, 15872, 16208, 19840, 20260, 31403, 32416, 39680, 40520, 62806, 64832, 79360, 81040, 125612, 129664, 157015, 162080, 251224, 259328, 314030, 324160, 502448, 518656, 628060, 648320, 1004896, 1256120, 1296640, 2009792, 2512240, 2593280, 4019584, 5024480, 8039168, 10048960, 16078336, 20097920, 40195840, 80391680]

約数ペア:

[(1, 80391680), (2, 40195840), (4, 20097920), (5, 16078336), (8, 10048960), (10, 8039168), (16, 5024480), (20, 4019584), (31, 2593280), (32, 2512240), (40, 2009792), (62, 1296640), (64, 1256120), (80, 1004896), (124, 648320), (128, 628060), (155, 518656), (160, 502448), (248, 324160), (256, 314030), (310, 259328), (320, 251224), (496, 162080), (512, 157015), (620, 129664), (640, 125612), (992, 81040), (1013, 79360), (1240, 64832), (1280, 62806), (1984, 40520), (2026, 39680), (2480, 32416), (2560, 31403), (3968, 20260), (4052, 19840), (4960, 16208), (5065, 15872), (7936, 10130), (8104, 9920)]