31712500

素因数分解:

$2^2\times 5^5\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 72182880

約数和(自身を除く): 40470380

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 59, 86, 100, 118, 125, 172, 215, 236, 250, 295, 430, 500, 590, 625, 860, 1075, 1180, 1250, 1475, 2150, 2500, 2537, 2950, 3125, 4300, 5074, 5375, 5900, 6250, 7375, 10148, 10750, 12500, 12685, 14750, 21500, 25370, 26875, 29500, 36875, 50740, 53750, 63425, 73750, 107500, 126850, 134375, 147500, 184375, 253700, 268750, 317125, 368750, 537500, 634250, 737500, 1268500, 1585625, 3171250, 6342500, 7928125, 15856250, 31712500]

約数ペア:

[(1, 31712500), (2, 15856250), (4, 7928125), (5, 6342500), (10, 3171250), (20, 1585625), (25, 1268500), (43, 737500), (50, 634250), (59, 537500), (86, 368750), (100, 317125), (118, 268750), (125, 253700), (172, 184375), (215, 147500), (236, 134375), (250, 126850), (295, 107500), (430, 73750), (500, 63425), (590, 53750), (625, 50740), (860, 36875), (1075, 29500), (1180, 26875), (1250, 25370), (1475, 21500), (2150, 14750), (2500, 12685), (2537, 12500), (2950, 10750), (3125, 10148), (4300, 7375), (5074, 6250), (5375, 5900)]