21071000

素因数分解:

$2^3\times 5^3\times {\mathrm{19}}^1\times {\mathrm{1109}}^1$

素因数の和:1149

約数の個数: 64

約数和(自身を含む): 51948000

約数和(自身を除く): 30877000

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 125, 152, 190, 200, 250, 380, 475, 500, 760, 950, 1000, 1109, 1900, 2218, 2375, 3800, 4436, 4750, 5545, 8872, 9500, 11090, 19000, 21071, 22180, 27725, 42142, 44360, 55450, 84284, 105355, 110900, 138625, 168568, 210710, 221800, 277250, 421420, 526775, 554500, 842840, 1053550, 1109000, 2107100, 2633875, 4214200, 5267750, 10535500, 21071000]

約数ペア:

[(1, 21071000), (2, 10535500), (4, 5267750), (5, 4214200), (8, 2633875), (10, 2107100), (19, 1109000), (20, 1053550), (25, 842840), (38, 554500), (40, 526775), (50, 421420), (76, 277250), (95, 221800), (100, 210710), (125, 168568), (152, 138625), (190, 110900), (200, 105355), (250, 84284), (380, 55450), (475, 44360), (500, 42142), (760, 27725), (950, 22180), (1000, 21071), (1109, 19000), (1900, 11090), (2218, 9500), (2375, 8872), (3800, 5545), (4436, 4750)]