20541438

素因数分解:

$2^1\times 3^4\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:223

約数の個数: 80

約数和(自身を含む): 49658400

約数和(自身を除く): 29116962

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 37, 46, 54, 69, 74, 81, 111, 138, 149, 162, 207, 222, 298, 333, 414, 447, 621, 666, 851, 894, 999, 1242, 1341, 1702, 1863, 1998, 2553, 2682, 2997, 3427, 3726, 4023, 5106, 5513, 5994, 6854, 7659, 8046, 10281, 11026, 12069, 15318, 16539, 20562, 22977, 24138, 30843, 33078, 45954, 49617, 61686, 68931, 92529, 99234, 126799, 137862, 148851, 185058, 253598, 277587, 297702, 380397, 446553, 555174, 760794, 893106, 1141191, 2282382, 3423573, 6847146, 10270719, 20541438]

約数ペア:

[(1, 20541438), (2, 10270719), (3, 6847146), (6, 3423573), (9, 2282382), (18, 1141191), (23, 893106), (27, 760794), (37, 555174), (46, 446553), (54, 380397), (69, 297702), (74, 277587), (81, 253598), (111, 185058), (138, 148851), (149, 137862), (162, 126799), (207, 99234), (222, 92529), (298, 68931), (333, 61686), (414, 49617), (447, 45954), (621, 33078), (666, 30843), (851, 24138), (894, 22977), (999, 20562), (1242, 16539), (1341, 15318), (1702, 12069), (1863, 11026), (1998, 10281), (2553, 8046), (2682, 7659), (2997, 6854), (3427, 5994), (3726, 5513), (4023, 5106)]