20881080

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{5273}}^1$

素因数の和:5301

約数の個数: 96

約数和(自身を含む): 74046960

約数和(自身を除く): 53165880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 132, 165, 180, 198, 220, 264, 330, 360, 396, 440, 495, 660, 792, 990, 1320, 1980, 3960, 5273, 10546, 15819, 21092, 26365, 31638, 42184, 47457, 52730, 58003, 63276, 79095, 94914, 105460, 116006, 126552, 158190, 174009, 189828, 210920, 232012, 237285, 290015, 316380, 348018, 379656, 464024, 474570, 522027, 580030, 632760, 696036, 870045, 949140, 1044054, 1160060, 1392072, 1740090, 1898280, 2088108, 2320120, 2610135, 3480180, 4176216, 5220270, 6960360, 10440540, 20881080]

約数ペア:

[(1, 20881080), (2, 10440540), (3, 6960360), (4, 5220270), (5, 4176216), (6, 3480180), (8, 2610135), (9, 2320120), (10, 2088108), (11, 1898280), (12, 1740090), (15, 1392072), (18, 1160060), (20, 1044054), (22, 949140), (24, 870045), (30, 696036), (33, 632760), (36, 580030), (40, 522027), (44, 474570), (45, 464024), (55, 379656), (60, 348018), (66, 316380), (72, 290015), (88, 237285), (90, 232012), (99, 210920), (110, 189828), (120, 174009), (132, 158190), (165, 126552), (180, 116006), (198, 105460), (220, 94914), (264, 79095), (330, 63276), (360, 58003), (396, 52730), (440, 47457), (495, 42184), (660, 31638), (792, 26365), (990, 21092), (1320, 15819), (1980, 10546), (3960, 5273)]