21500250

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{109}}^1\times {\mathrm{263}}^1$

素因数の和:392

約数の個数: 64

約数和(自身を含む): 54362880

約数和(自身を除く): 32862630

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 109, 125, 150, 218, 250, 263, 327, 375, 526, 545, 654, 750, 789, 1090, 1315, 1578, 1635, 2630, 2725, 3270, 3945, 5450, 6575, 7890, 8175, 13150, 13625, 16350, 19725, 27250, 28667, 32875, 39450, 40875, 57334, 65750, 81750, 86001, 98625, 143335, 172002, 197250, 286670, 430005, 716675, 860010, 1433350, 2150025, 3583375, 4300050, 7166750, 10750125, 21500250]

約数ペア:

[(1, 21500250), (2, 10750125), (3, 7166750), (5, 4300050), (6, 3583375), (10, 2150025), (15, 1433350), (25, 860010), (30, 716675), (50, 430005), (75, 286670), (109, 197250), (125, 172002), (150, 143335), (218, 98625), (250, 86001), (263, 81750), (327, 65750), (375, 57334), (526, 40875), (545, 39450), (654, 32875), (750, 28667), (789, 27250), (1090, 19725), (1315, 16350), (1578, 13625), (1635, 13150), (2630, 8175), (2725, 7890), (3270, 6575), (3945, 5450)]