18070857

素因数分解:

$3^4\times 7^2\times {\mathrm{29}}^1\times {\mathrm{157}}^1$

素因数の和:212

約数の個数: 60

約数和(自身を含む): 32691780

約数和(自身を除く): 14620923

約数列:

[1, 3, 7, 9, 21, 27, 29, 49, 63, 81, 87, 147, 157, 189, 203, 261, 441, 471, 567, 609, 783, 1099, 1323, 1413, 1421, 1827, 2349, 3297, 3969, 4239, 4263, 4553, 5481, 7693, 9891, 12717, 12789, 13659, 16443, 23079, 29673, 31871, 38367, 40977, 69237, 89019, 95613, 115101, 122931, 207711, 223097, 286839, 368793, 623133, 669291, 860517, 2007873, 2581551, 6023619, 18070857]

約数ペア:

[(1, 18070857), (3, 6023619), (7, 2581551), (9, 2007873), (21, 860517), (27, 669291), (29, 623133), (49, 368793), (63, 286839), (81, 223097), (87, 207711), (147, 122931), (157, 115101), (189, 95613), (203, 89019), (261, 69237), (441, 40977), (471, 38367), (567, 31871), (609, 29673), (783, 23079), (1099, 16443), (1323, 13659), (1413, 12789), (1421, 12717), (1827, 9891), (2349, 7693), (3297, 5481), (3969, 4553), (4239, 4263)]