21000250

素因数分解:

$2^1\times 5^3\times {\mathrm{167}}^1\times {\mathrm{503}}^1$

素因数の和:687

約数の個数: 32

約数和(自身を含む): 39626496

約数和(自身を除く): 18626246

約数列:

[1, 2, 5, 10, 25, 50, 125, 167, 250, 334, 503, 835, 1006, 1670, 2515, 4175, 5030, 8350, 12575, 20875, 25150, 41750, 62875, 84001, 125750, 168002, 420005, 840010, 2100025, 4200050, 10500125, 21000250]

約数ペア:

[(1, 21000250), (2, 10500125), (5, 4200050), (10, 2100025), (25, 840010), (50, 420005), (125, 168002), (167, 125750), (250, 84001), (334, 62875), (503, 41750), (835, 25150), (1006, 20875), (1670, 12575), (2515, 8350), (4175, 5030)]