20458380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{977}}^1$

素因数の和:1338

約数の個数: 48

約数和(自身を含む): 57506400

約数和(自身を除く): 37048020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 349, 698, 977, 1047, 1396, 1745, 1954, 2094, 2931, 3490, 3908, 4188, 4885, 5235, 5862, 6980, 9770, 10470, 11724, 14655, 19540, 20940, 29310, 58620, 340973, 681946, 1022919, 1363892, 1704865, 2045838, 3409730, 4091676, 5114595, 6819460, 10229190, 20458380]

約数ペア:

[(1, 20458380), (2, 10229190), (3, 6819460), (4, 5114595), (5, 4091676), (6, 3409730), (10, 2045838), (12, 1704865), (15, 1363892), (20, 1022919), (30, 681946), (60, 340973), (349, 58620), (698, 29310), (977, 20940), (1047, 19540), (1396, 14655), (1745, 11724), (1954, 10470), (2094, 9770), (2931, 6980), (3490, 5862), (3908, 5235), (4188, 4885)]