20687925

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1$

素因数の和:282

約数の個数: 48

約数和(自身を含む): 36426240

約数和(自身を除く): 15738315

約数列:

[1, 3, 5, 15, 23, 25, 67, 69, 75, 115, 179, 201, 335, 345, 537, 575, 895, 1005, 1541, 1675, 1725, 2685, 4117, 4475, 4623, 5025, 7705, 11993, 12351, 13425, 20585, 23115, 35979, 38525, 59965, 61755, 102925, 115575, 179895, 275839, 299825, 308775, 827517, 899475, 1379195, 4137585, 6895975, 20687925]

約数ペア:

[(1, 20687925), (3, 6895975), (5, 4137585), (15, 1379195), (23, 899475), (25, 827517), (67, 308775), (69, 299825), (75, 275839), (115, 179895), (179, 115575), (201, 102925), (335, 61755), (345, 59965), (537, 38525), (575, 35979), (895, 23115), (1005, 20585), (1541, 13425), (1675, 12351), (1725, 11993), (2685, 7705), (4117, 5025), (4475, 4623)]