18355360

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1289}}^1$

素因数の和:1393

約数の個数: 48

約数和(自身を含む): 43885800

約数和(自身を除く): 25530440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 890, 1289, 1424, 1780, 2578, 2848, 3560, 5156, 6445, 7120, 10312, 12890, 14240, 20624, 25780, 41248, 51560, 103120, 114721, 206240, 229442, 458884, 573605, 917768, 1147210, 1835536, 2294420, 3671072, 4588840, 9177680, 18355360]

約数ペア:

[(1, 18355360), (2, 9177680), (4, 4588840), (5, 3671072), (8, 2294420), (10, 1835536), (16, 1147210), (20, 917768), (32, 573605), (40, 458884), (80, 229442), (89, 206240), (160, 114721), (178, 103120), (356, 51560), (445, 41248), (712, 25780), (890, 20624), (1289, 14240), (1424, 12890), (1780, 10312), (2578, 7120), (2848, 6445), (3560, 5156)]