20989680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{4603}}^1$

素因数の和:4638

約数の個数: 80

約数和(自身を含む): 68507520

約数和(自身を除く): 47517840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 95, 114, 120, 152, 190, 228, 240, 285, 304, 380, 456, 570, 760, 912, 1140, 1520, 2280, 4560, 4603, 9206, 13809, 18412, 23015, 27618, 36824, 46030, 55236, 69045, 73648, 87457, 92060, 110472, 138090, 174914, 184120, 220944, 262371, 276180, 349828, 368240, 437285, 524742, 552360, 699656, 874570, 1049484, 1104720, 1311855, 1399312, 1749140, 2098968, 2623710, 3498280, 4197936, 5247420, 6996560, 10494840, 20989680]

約数ペア:

[(1, 20989680), (2, 10494840), (3, 6996560), (4, 5247420), (5, 4197936), (6, 3498280), (8, 2623710), (10, 2098968), (12, 1749140), (15, 1399312), (16, 1311855), (19, 1104720), (20, 1049484), (24, 874570), (30, 699656), (38, 552360), (40, 524742), (48, 437285), (57, 368240), (60, 349828), (76, 276180), (80, 262371), (95, 220944), (114, 184120), (120, 174914), (152, 138090), (190, 110472), (228, 92060), (240, 87457), (285, 73648), (304, 69045), (380, 55236), (456, 46030), (570, 36824), (760, 27618), (912, 23015), (1140, 18412), (1520, 13809), (2280, 9206), (4560, 4603)]