205201520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{1063}}^1$

素因数の和:1222

約数の個数: 80

約数和(自身を含む): 506634240

約数和(自身を除く): 301432720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 127, 152, 190, 254, 304, 380, 508, 635, 760, 1016, 1063, 1270, 1520, 2032, 2126, 2413, 2540, 4252, 4826, 5080, 5315, 8504, 9652, 10160, 10630, 12065, 17008, 19304, 20197, 21260, 24130, 38608, 40394, 42520, 48260, 80788, 85040, 96520, 100985, 135001, 161576, 193040, 201970, 270002, 323152, 403940, 540004, 675005, 807880, 1080008, 1350010, 1615760, 2160016, 2565019, 2700020, 5130038, 5400040, 10260076, 10800080, 12825095, 20520152, 25650190, 41040304, 51300380, 102600760, 205201520]

約数ペア:

[(1, 205201520), (2, 102600760), (4, 51300380), (5, 41040304), (8, 25650190), (10, 20520152), (16, 12825095), (19, 10800080), (20, 10260076), (38, 5400040), (40, 5130038), (76, 2700020), (80, 2565019), (95, 2160016), (127, 1615760), (152, 1350010), (190, 1080008), (254, 807880), (304, 675005), (380, 540004), (508, 403940), (635, 323152), (760, 270002), (1016, 201970), (1063, 193040), (1270, 161576), (1520, 135001), (2032, 100985), (2126, 96520), (2413, 85040), (2540, 80788), (4252, 48260), (4826, 42520), (5080, 40394), (5315, 38608), (8504, 24130), (9652, 21260), (10160, 20197), (10630, 19304), (12065, 17008)]