20321840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3299}}^1$

素因数の和:3330

約数の個数: 80

約数和(自身を含む): 58924800

約数和(自身を除く): 38602960

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3299, 6160, 6598, 13196, 16495, 23093, 26392, 32990, 36289, 46186, 52784, 65980, 72578, 92372, 115465, 131960, 145156, 181445, 184744, 230930, 254023, 263920, 290312, 362890, 369488, 461860, 508046, 580624, 725780, 923720, 1016092, 1270115, 1451560, 1847440, 2032184, 2540230, 2903120, 4064368, 5080460, 10160920, 20321840]

約数ペア:

[(1, 20321840), (2, 10160920), (4, 5080460), (5, 4064368), (7, 2903120), (8, 2540230), (10, 2032184), (11, 1847440), (14, 1451560), (16, 1270115), (20, 1016092), (22, 923720), (28, 725780), (35, 580624), (40, 508046), (44, 461860), (55, 369488), (56, 362890), (70, 290312), (77, 263920), (80, 254023), (88, 230930), (110, 184744), (112, 181445), (140, 145156), (154, 131960), (176, 115465), (220, 92372), (280, 72578), (308, 65980), (385, 52784), (440, 46186), (560, 36289), (616, 32990), (770, 26392), (880, 23093), (1232, 16495), (1540, 13196), (3080, 6598), (3299, 6160)]