21729840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{8231}}^1$

素因数の和:8258

約数の個数: 80

約数和(自身を含む): 73495296

約数和(自身を除く): 51765456

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 8231, 16462, 24693, 32924, 41155, 49386, 65848, 82310, 90541, 98772, 123465, 131696, 164620, 181082, 197544, 246930, 271623, 329240, 362164, 395088, 452705, 493860, 543246, 658480, 724328, 905410, 987720, 1086492, 1358115, 1448656, 1810820, 1975440, 2172984, 2716230, 3621640, 4345968, 5432460, 7243280, 10864920, 21729840]

約数ペア:

[(1, 21729840), (2, 10864920), (3, 7243280), (4, 5432460), (5, 4345968), (6, 3621640), (8, 2716230), (10, 2172984), (11, 1975440), (12, 1810820), (15, 1448656), (16, 1358115), (20, 1086492), (22, 987720), (24, 905410), (30, 724328), (33, 658480), (40, 543246), (44, 493860), (48, 452705), (55, 395088), (60, 362164), (66, 329240), (80, 271623), (88, 246930), (110, 197544), (120, 181082), (132, 164620), (165, 131696), (176, 123465), (220, 98772), (240, 90541), (264, 82310), (330, 65848), (440, 49386), (528, 41155), (660, 32924), (880, 24693), (1320, 16462), (2640, 8231)]