40245760

素因数分解:

$2^9\times 5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:301

約数の個数: 80

約数和(自身を含む): 98208000

約数和(自身を除く): 57962240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 199, 256, 316, 320, 395, 398, 512, 632, 640, 790, 796, 995, 1264, 1280, 1580, 1592, 1990, 2528, 2560, 3160, 3184, 3980, 5056, 6320, 6368, 7960, 10112, 12640, 12736, 15721, 15920, 20224, 25280, 25472, 31442, 31840, 40448, 50560, 50944, 62884, 63680, 78605, 101120, 101888, 125768, 127360, 157210, 202240, 251536, 254720, 314420, 503072, 509440, 628840, 1006144, 1257680, 2012288, 2515360, 4024576, 5030720, 8049152, 10061440, 20122880, 40245760]

約数ペア:

[(1, 40245760), (2, 20122880), (4, 10061440), (5, 8049152), (8, 5030720), (10, 4024576), (16, 2515360), (20, 2012288), (32, 1257680), (40, 1006144), (64, 628840), (79, 509440), (80, 503072), (128, 314420), (158, 254720), (160, 251536), (199, 202240), (256, 157210), (316, 127360), (320, 125768), (395, 101888), (398, 101120), (512, 78605), (632, 63680), (640, 62884), (790, 50944), (796, 50560), (995, 40448), (1264, 31840), (1280, 31442), (1580, 25472), (1592, 25280), (1990, 20224), (2528, 15920), (2560, 15721), (3160, 12736), (3184, 12640), (3980, 10112), (5056, 7960), (6320, 6368)]