18152440

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5099}}^1$

素因数の和:5199

約数の個数: 32

約数和(自身を含む): 41310000

約数和(自身を除く): 23157560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5099, 10198, 20396, 25495, 40792, 50990, 101980, 203960, 453811, 907622, 1815244, 2269055, 3630488, 4538110, 9076220, 18152440]

約数ペア:

[(1, 18152440), (2, 9076220), (4, 4538110), (5, 3630488), (8, 2269055), (10, 1815244), (20, 907622), (40, 453811), (89, 203960), (178, 101980), (356, 50990), (445, 40792), (712, 25495), (890, 20396), (1780, 10198), (3560, 5099)]