161105840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{287689}}^1$

素因数の和:287709

約数の個数: 40

約数和(自身を含む): 428082720

約数和(自身を除く): 266976880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 287689, 575378, 1150756, 1438445, 2013823, 2301512, 2876890, 4027646, 4603024, 5753780, 8055292, 10069115, 11507560, 16110584, 20138230, 23015120, 32221168, 40276460, 80552920, 161105840]

約数ペア:

[(1, 161105840), (2, 80552920), (4, 40276460), (5, 32221168), (7, 23015120), (8, 20138230), (10, 16110584), (14, 11507560), (16, 10069115), (20, 8055292), (28, 5753780), (35, 4603024), (40, 4027646), (56, 2876890), (70, 2301512), (80, 2013823), (112, 1438445), (140, 1150756), (280, 575378), (560, 287689)]