21000273832

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{563}}^1\times {\mathrm{2777}}^1$

素因数の和:3442

約数の個数: 64

約数和(自身を含む): 41739338880

約数和(自身を除く): 20739065048

約数列:

[1, 2, 4, 8, 23, 46, 73, 92, 146, 184, 292, 563, 584, 1126, 1679, 2252, 2777, 3358, 4504, 5554, 6716, 11108, 12949, 13432, 22216, 25898, 41099, 51796, 63871, 82198, 103592, 127742, 164396, 202721, 255484, 328792, 405442, 510968, 810884, 945277, 1563451, 1621768, 1890554, 3126902, 3781108, 4662583, 6253804, 7562216, 9325166, 12507608, 18650332, 35959373, 37300664, 71918746, 114131923, 143837492, 228263846, 287674984, 456527692, 913055384, 2625034229, 5250068458, 10500136916, 21000273832]

約数ペア:

[(1, 21000273832), (2, 10500136916), (4, 5250068458), (8, 2625034229), (23, 913055384), (46, 456527692), (73, 287674984), (92, 228263846), (146, 143837492), (184, 114131923), (292, 71918746), (563, 37300664), (584, 35959373), (1126, 18650332), (1679, 12507608), (2252, 9325166), (2777, 7562216), (3358, 6253804), (4504, 4662583), (5554, 3781108), (6716, 3126902), (11108, 1890554), (12949, 1621768), (13432, 1563451), (22216, 945277), (25898, 810884), (41099, 510968), (51796, 405442), (63871, 328792), (82198, 255484), (103592, 202721), (127742, 164396)]