20912880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1103}}^1$

素因数の和:1198

約数の個数: 80

約数和(自身を含む): 65710080

約数和(自身を除く): 44797200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 79, 80, 120, 158, 237, 240, 316, 395, 474, 632, 790, 948, 1103, 1185, 1264, 1580, 1896, 2206, 2370, 3160, 3309, 3792, 4412, 4740, 5515, 6320, 6618, 8824, 9480, 11030, 13236, 16545, 17648, 18960, 22060, 26472, 33090, 44120, 52944, 66180, 87137, 88240, 132360, 174274, 261411, 264720, 348548, 435685, 522822, 697096, 871370, 1045644, 1307055, 1394192, 1742740, 2091288, 2614110, 3485480, 4182576, 5228220, 6970960, 10456440, 20912880]

約数ペア:

[(1, 20912880), (2, 10456440), (3, 6970960), (4, 5228220), (5, 4182576), (6, 3485480), (8, 2614110), (10, 2091288), (12, 1742740), (15, 1394192), (16, 1307055), (20, 1045644), (24, 871370), (30, 697096), (40, 522822), (48, 435685), (60, 348548), (79, 264720), (80, 261411), (120, 174274), (158, 132360), (237, 88240), (240, 87137), (316, 66180), (395, 52944), (474, 44120), (632, 33090), (790, 26472), (948, 22060), (1103, 18960), (1185, 17648), (1264, 16545), (1580, 13236), (1896, 11030), (2206, 9480), (2370, 8824), (3160, 6618), (3309, 6320), (3792, 5515), (4412, 4740)]