20885004

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{179}}^1\times {\mathrm{463}}^1$

素因数の和:659

約数の個数: 72

約数和(自身を含む): 60802560

約数和(自身を除く): 39917556

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 179, 252, 358, 463, 537, 716, 926, 1074, 1253, 1389, 1611, 1852, 2148, 2506, 2778, 3222, 3241, 3759, 4167, 5012, 5556, 6444, 6482, 7518, 8334, 9723, 11277, 12964, 15036, 16668, 19446, 22554, 29169, 38892, 45108, 58338, 82877, 116676, 165754, 248631, 331508, 497262, 580139, 745893, 994524, 1160278, 1491786, 1740417, 2320556, 2983572, 3480834, 5221251, 6961668, 10442502, 20885004]

約数ペア:

[(1, 20885004), (2, 10442502), (3, 6961668), (4, 5221251), (6, 3480834), (7, 2983572), (9, 2320556), (12, 1740417), (14, 1491786), (18, 1160278), (21, 994524), (28, 745893), (36, 580139), (42, 497262), (63, 331508), (84, 248631), (126, 165754), (179, 116676), (252, 82877), (358, 58338), (463, 45108), (537, 38892), (716, 29169), (926, 22554), (1074, 19446), (1253, 16668), (1389, 15036), (1611, 12964), (1852, 11277), (2148, 9723), (2506, 8334), (2778, 7518), (3222, 6482), (3241, 6444), (3759, 5556), (4167, 5012)]