20985960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{179}}^1\times {\mathrm{977}}^1$

素因数の和:1170

約数の個数: 64

約数和(自身を含む): 63374400

約数和(自身を除く): 42388440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 179, 358, 537, 716, 895, 977, 1074, 1432, 1790, 1954, 2148, 2685, 2931, 3580, 3908, 4296, 4885, 5370, 5862, 7160, 7816, 9770, 10740, 11724, 14655, 19540, 21480, 23448, 29310, 39080, 58620, 117240, 174883, 349766, 524649, 699532, 874415, 1049298, 1399064, 1748830, 2098596, 2623245, 3497660, 4197192, 5246490, 6995320, 10492980, 20985960]

約数ペア:

[(1, 20985960), (2, 10492980), (3, 6995320), (4, 5246490), (5, 4197192), (6, 3497660), (8, 2623245), (10, 2098596), (12, 1748830), (15, 1399064), (20, 1049298), (24, 874415), (30, 699532), (40, 524649), (60, 349766), (120, 174883), (179, 117240), (358, 58620), (537, 39080), (716, 29310), (895, 23448), (977, 21480), (1074, 19540), (1432, 14655), (1790, 11724), (1954, 10740), (2148, 9770), (2685, 7816), (2931, 7160), (3580, 5862), (3908, 5370), (4296, 4885)]