21000565425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{597031}}^1$

素因数の和:597118

約数の個数: 48

約数和(自身を含む): 40273390592

約数和(自身を除く): 19272825167

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 67, 75, 105, 175, 201, 335, 469, 525, 1005, 1407, 1675, 2345, 5025, 7035, 11725, 35175, 597031, 1791093, 2985155, 4179217, 8955465, 12537651, 14925775, 20896085, 40001077, 44777325, 62688255, 104480425, 120003231, 200005385, 280007539, 313441275, 600016155, 840022617, 1000026925, 1400037695, 3000080775, 4200113085, 7000188475, 21000565425]

約数ペア:

[(1, 21000565425), (3, 7000188475), (5, 4200113085), (7, 3000080775), (15, 1400037695), (21, 1000026925), (25, 840022617), (35, 600016155), (67, 313441275), (75, 280007539), (105, 200005385), (175, 120003231), (201, 104480425), (335, 62688255), (469, 44777325), (525, 40001077), (1005, 20896085), (1407, 14925775), (1675, 12537651), (2345, 8955465), (5025, 4179217), (7035, 2985155), (11725, 1791093), (35175, 597031)]