21018375

素因数分解:

$3^2\times 5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:202

約数の個数: 96

約数和(自身を含む): 46141056

約数和(自身を除く): 25122681

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 25, 35, 45, 51, 63, 75, 85, 105, 119, 125, 153, 157, 175, 225, 255, 315, 357, 375, 425, 471, 525, 595, 765, 785, 875, 1071, 1099, 1125, 1275, 1413, 1575, 1785, 2125, 2355, 2625, 2669, 2975, 3297, 3825, 3925, 5355, 5495, 6375, 7065, 7875, 8007, 8925, 9891, 11775, 13345, 14875, 16485, 18683, 19125, 19625, 24021, 26775, 27475, 35325, 40035, 44625, 49455, 56049, 58875, 66725, 82425, 93415, 120105, 133875, 137375, 168147, 176625, 200175, 247275, 280245, 333625, 412125, 467075, 600525, 840735, 1000875, 1236375, 1401225, 2335375, 3002625, 4203675, 7006125, 21018375]

約数ペア:

[(1, 21018375), (3, 7006125), (5, 4203675), (7, 3002625), (9, 2335375), (15, 1401225), (17, 1236375), (21, 1000875), (25, 840735), (35, 600525), (45, 467075), (51, 412125), (63, 333625), (75, 280245), (85, 247275), (105, 200175), (119, 176625), (125, 168147), (153, 137375), (157, 133875), (175, 120105), (225, 93415), (255, 82425), (315, 66725), (357, 58875), (375, 56049), (425, 49455), (471, 44625), (525, 40035), (595, 35325), (765, 27475), (785, 26775), (875, 24021), (1071, 19625), (1099, 19125), (1125, 18683), (1275, 16485), (1413, 14875), (1575, 13345), (1785, 11775), (2125, 9891), (2355, 8925), (2625, 8007), (2669, 7875), (2975, 7065), (3297, 6375), (3825, 5495), (3925, 5355)]